Vocabulary

  • for long: For a considerable period of time.
  • move around: To change position or location; to go from place to place.
  • back into: To drive a vehicle backwards into a space or area.
  • in battery: Refers to artillery arranged and ready for use.
  • power on: To activate or switch on a device or machine.
  • talking about: To discuss a particular topic.
  • in terms of
  • back up: To save a copy of your computer data
  • of course: Sure ; Certainly
  • in comparison: When compared to something else.
  • of the century: The most notable or important in a hundred-year period.
  • in time: Eventually; after a period of time.
  • hold onto: To grasp or grip something tightly.
  • in use: Being used at the present time.
  • over to: Used to hand over to someone else to speak
  • made with: Containing a particular ingredient or material.
  • energy sources: Materials or processes that can produce energy.
  • at a time: Separately; one by one
  • for days: For a long period of time; lasting several days.
  • whole class: The entirety of a class of students.
  • also known as: Also called; alternatively named.
  • think of: To look on as (being something specific); consider
  • due to: Because of; owing to
  • too heavy: Having excessive weight; difficult to lift or move.
  • on the table: Located on the surface of a table.
  • back then: At that time in the past.
  • pay off: To give money to get person to do something; bribe
  • dip into: To spend part of some money which you have been saving.
  • episode: One separate event in a series of events
  • process: To organize and use data in a computer
  • basically: Used before you explain something simply, clearly
  • scale: Size, level, or amount when compared
  • positive: Showing agreement or support for something
  • capacity: Ability to hold, involve or contain (e.g. liquids)
  • familiar: Well-known or easily recognized
  • amount: Quantity of something
  • current: Electricity flowing through wires
  • demand: Desire customers have to buy product, service
  • toxic: Poisonous; harmful
  • worth: the financial, practical or moral value of somebody/something
  • series: Set of stories or articles on a particular subject
  • form: Sports team or person's current winning record
  • charge: To run quickly toward someone to attack them
  • release: To free someone from a responsibility or burden
  • steady: Happening or developing at a regular rate
  • generate: To create or be produced or bring into existence
  • pretty: Being attractive to the eye in a simple way
  • lead: Wire for electricity, computer, etc.; cable
  • application: Software program, e.g. for smart phone
  • abundant: Being in very great supply; plentiful
  • provide: To make available; to supply for use
  • oxygen: A gas in the air that we need to breathe
  • rely: Depend on with full trust or confidence
  • energy: Physical or mental strength
  • solution: Mix of a liquid and a solid or a gas
  • grid: Electrical network supplying electricity to area
  • react: To change when mixing with other chemicals
  • carbon: Chemical element with an atomic number of 6
  • duration: Length of time that something lasts
  • build: Your physical shape; physique
  • chemistry: The study of the structure of substances
  • solar: Concerning the sun, or its heat
  • deploy: To put into position (often a military operation)
  • great: Very good; better than before
  • quick: Using very little time; moving far in little time
  • wind: A current of air moving approximately horizontally, especially one strong enough to be felt
  • start: First time or place that a thing exists; beginning
  • rusty: Performing badly from lack of practice
  • world: All the humans, events, activities on the earth
  • recharge: To refill a battery, etc. with electricity
  • case: Container used to carry things, e.g. clothes
  • side: To decide to agree with one point, not the other
  • discharge: To complete a task that has been assigned
  • work: The product of some artistic or literary endeavor
  • iron: Heavy metal device heated to smooth clothes
  • degrade: To reduce in amount or strength
  • stabilize: To make stable/consistent, with no major changes
  • rust: Reddish brown color
  • battery: Portable device that stores electricity
  • electrolyte: Electrically charged substances
  • graphite: Black substance that is used in pencil lead
  • oxide: Compound from combining oxygen with a chemical
  • ion: Atoms with either a positive or negative charge
  • alkaline: Containing or behaving like an alkali
  • portability: Quality of being light enough to be carried
  • cathode: Electrode by which electricity leaves a battery
  • rechargeable: Capable of being recharged
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    • abundant

      US /əˈbʌndənt/

      UK /əˈbʌndənt/

      • Adjective
      • Being in very great supply; plentiful
      B2TOEIC
      More
    • alkaline

      US /ˈælkəlɪn, -ˌlaɪn/

      UK /ˈælkəlaɪn/

      • Adjective
      • Containing or behaving like an alkali
      C1
      More
    • also known as

      US

      UK

      • Phrase
      • Also called; alternatively named.
      • Identified by another term; synonymous with.
      A1
      More
    • application

      US /ˌæplɪˈkeʃən/

      UK /ˌæplɪˈkeɪʃn/

      • Noun (Countable/Uncountable)
      • Software program, e.g. for smart phone
      • Process of spreading a substance over a surface
      A2TOEIC
      More
    • at a time

      US /æt e taɪm/

      UK /æt ə taim/

      • Phrase
      • Separately; one by one
      • Simultaneously; together
      A1
      More
    • back into

      US /bæk ˈɪntu/

      UK /bæk ˈɪntuː/

      • Phrasal Verb
      • To drive a vehicle backwards into a space or area.
      • To accidentally collide with something while moving backwards.
      A1
      More
    • back then

      US

      UK

      • Phrase
      • At that time in the past.
      A1
      More
    • back up

      US /bæk ʌp/

      UK /bæk ʌp/

      • Phrasal Verb
      • To save a copy of your computer data
      • To confirm the truth of what someone says
      A1
      More
    • basically

      US /ˈbesɪkəli,-kli/

      UK /ˈbeɪsɪkli/

      • Adverb
      • Used before you explain something simply, clearly
      • In essence; when you consider the most important aspects of something.
      A2
      More
    • battery

      US /ˈbætəri/

      UK /ˈbætri/

      • Countable Noun
      • Portable device that stores electricity
      • Noun
      • Large group of similar things functioning together
      B1
      More
    • capacity

      US /kəˈpæsɪti/

      UK /kə'pæsətɪ/

      • Noun (Countable/Uncountable)
      • Ability to hold, involve or contain (e.g. liquids)
      • Largest amount of something that can be produced
      B1
      More
    • carbon

      US /ˈkɑrbən/

      UK /'kɑ:bən/

      • Uncountable Noun
      • Chemical element with an atomic number of 6
      B1
      More
    • cathode

      US /ˈkæθˌod/

      UK /ˈkæθəʊd/

      • Noun
      • Electrode by which electricity leaves a battery
      C1
      More
    • charge

      US /tʃɑrdʒ/

      UK /tʃɑ:dʒ/

      • Verb (Transitive/Intransitive)
      • To run quickly toward someone to attack them
      • To ask for money as a price for a service or goods
      • Noun (Countable/Uncountable)
      • An attack by running quickly toward someone
      • A price for a service or goods
      A2
      More
    • chemistry

      US /ˈkɛmɪstri/

      UK /'kemɪstrɪ/

      • Uncountable Noun
      • The study of the structure of substances
      B1
      More
    • current

      US /ˈkɚrənt, ˈkʌr-/

      UK /'kʌrənt/

      • Uncountable Noun
      • Electricity flowing through wires
      • Movement of water in a river, or air in the sky
      • Adjective
      • Happening or being in the present time
      • In general use or accepted by most people.
      A2
      More
    • degrade

      US /dɪˈɡred/

      UK /dɪ'ɡreɪd/

      • Transitive Verb
      • To reduce in amount or strength
      B2
      More
    • demand

      US /dɪˈmænd/

      UK /dɪ'mɑ:nd/

      • Noun (Countable/Uncountable)
      • Desire customers have to buy product, service
      • A strong request for someone to do something
      • Transitive Verb
      • To strongly request someone to do something
      • To need something.
      A2TOEIC
      More
    • deploy

      US /dɪˈplɔɪ/

      UK /dɪˈplɔɪ/

      • Transitive Verb
      • To put into position (often a military operation)
      • To put something into use or action.
      B1TOEIC
      More
    • dip into

      US /dɪp ˈɪntu/

      UK /dip ˈɪntuː/

      • Phrasal Verb
      • To spend part of some money which you have been saving.
      • To read parts of a book, but not the whole book.
      B2
      More
    • discharge

      US /dɪsˈtʃɑ:rdʒ/

      UK /dɪsˈtʃɑ:dʒ/

      • Transitive Verb
      • To complete a task that has been assigned
      • To produce or release a substance
      • Noun (Countable/Uncountable)
      • A substance that has been released
      • The retirement of someone from service e.g. army
      B1
      More
    • due to

      US /du tu/

      UK /dju: tu:/

      • Preposition
      • Because of; owing to
      • Adjective
      • Attributable to; caused by.
      A1
      More
    • duration

      US /duˈreɪʃn/

      UK /djuˈreɪʃn/

      • Uncountable Noun
      • Length of time that something lasts
      B1TOEIC
      More
    • electrolyte

      US /ɪˈlɛktrəˌlaɪt/

      UK /ɪˈlektrəlaɪt/

      • Noun
      • Electrically charged substances
      C2
      More
    • energy

      US /ˈɛnədʒi/

      UK /'enədʒɪ/

      • Noun (Countable/Uncountable)
      • Physical or mental strength
      • Enthusiasm and determination.
      A2
      More
    • energy sources

      US

      UK

      • Noun (plural)
      • Materials or processes that can produce energy.
      More
    • episode

      US /ˈɛpɪˌsod/

      UK /'epɪsəʊd/

      • Noun
      • One separate event in a series of events
      • Show which is part of a larger story
      B1TOEIC
      More
    • familiar

      US /fəˈmɪljɚ/

      UK /fəˈmɪliə(r)/

      • Adjective
      • Well-known or easily recognized
      • Having a good knowledge of something.
      • Noun
      • A close friend or associate.
      • (In folklore) a spirit, often in animal form, believed to attend and serve a witch.
      A2TOEIC
      More
    • for days

      US /fɔr dez/

      UK /fɔ: deɪz/

      • Phrase
      • For a long period of time; lasting several days.
      More
    • for long

      US

      UK

      • Phrase
      • For a considerable period of time.
      • For a significant duration in the future.
      A1
      More
    • generate

      US /ˈdʒɛnəˌret/

      UK /ˈdʒenəreɪt/

      • Transitive Verb
      • To create or be produced or bring into existence
      • To create electricity, heat, energy and power
      A2TOEIC
      More
    • graphite

      US /ˈɡræfˌaɪt/

      UK /ˈgræfaɪt/

      • Uncountable Noun
      • Black substance that is used in pencil lead
      C1
      More
    • grid

      US /ɡrɪd/

      UK /ɡrɪd/

      • Noun
      • Electrical network supplying electricity to area
      • Metal structure with bars used to cover a hole
      • Transitive Verb
      • To mark with a grid.
      B2
      More
    • hold onto

      US /hold ˈɑnˌtu/

      UK /həuld ˈɔntu/

      • Phrasal Verb
      • To grasp or grip something tightly.
      • To keep or retain possession of something.
      A1
      More
    • in battery

      US /ɪn ˈbætəri/

      UK /ɪn ˈbætəri/

      • other
      • Refers to artillery arranged and ready for use.
      C2
      More
    • in comparison

      US /ɪn kəmˈpærɪsən/

      UK /in kəmˈpærisən/

      • Adverb
      • When compared to something else.
      • Phrase
      • When compared to something else.
      • When considering the differences between two or more things.
      A1
      More
    • in terms of

      US

      UK

      • Phrase
      • With regard to; concerning a particular aspect.
      A1
      More
    • in time

      US /ɪn taɪm/

      UK /in taim/

      • Adverb
      • Eventually; after a period of time.
      • Not late; with enough time to spare.
      • Phrase
      • Eventually; before it is too late.
      • According to the scheduled time; punctual.
      A1
      More
    • in use

      US /ɪn juz/

      UK /in ju:z/

      • Adjective
      • Being used at the present time.
      A2
      More
    • ion

      US /ˈaɪən/

      UK /'aɪən/

      • Noun (Countable/Uncountable)
      • Atoms with either a positive or negative charge
      B2
      More
    • iron

      US /ˈaɪərn/

      UK /ˈaɪən/

      • Noun (Countable/Uncountable)
      • Heavy metal device heated to smooth clothes
      • Golf club with a metal head
      • Transitive Verb
      • To use a hot flat-based machine to smooth clothes
      B1
      More
    • made with

      US

      UK

      • Phrase
      • Containing a particular ingredient or material.
      • Created or produced using a specific tool, method, or process.
      • Phrasal Verb
      • To offer or provide something, often quickly or unexpectedly.
      A1
      More
    • move around

      US /muv əˈraʊnd/

      UK /mu:v əˈraund/

      • Phrasal Verb
      • To change position or location; to go from place to place.
      • Intransitive Verb
      • To spread or circulate (e.g., information, rumors).
      More
    • of course

      US /ʌv kɔː(r)s/

      UK /ɔv kɔː(r)s/

      • Adverb
      • Sure ; Certainly
      • Phrase
      • For sure; certainly
      A2
      More
    • of the century

      US /ʌv ðə ˈsɛnʧəri/

      UK /əv ðə ˈsenʧəri/

      • other
      • The most notable or important in a hundred-year period.
      B2
      More
    • on the table

      US /ɑn ði ˈtebəl/

      UK /ɔn ðə ˈteibl/

      • Phrase
      • Located on the surface of a table.
      • Available for consideration or discussion.
      A1
      More
    • over to

      US

      UK

      • Preposition
      • Used to hand over to someone else to speak
      • The responsibility is now yours
      More
    • oxide

      US /ˈɑ:ksaɪd/

      UK /ˈɒksaɪd/

      • Noun
      • Compound from combining oxygen with a chemical
      B2
      More
    • oxygen

      US /ˈɑksɪdʒən/

      UK /'ɒksɪdʒən/

      • Uncountable Noun
      • A gas in the air that we need to breathe
      • Oxygen administered as a medical treatment.
      B1
      More
    • pay off

      US /pe ɔf/

      UK /pei ɔf/

      • Phrasal Verb
      • To give money to get person to do something; bribe
      • To give money to settle a debt
      • Transitive Verb
      • To bribe someone.
      • To pay a debt in full.
      A1
      More
    • portability

      US /ˌpɔ:tə'bɪlətɪ/

      UK /ˌpɔ:tə'bɪlətɪ/

      • Uncountable Noun
      • Quality of being light enough to be carried
      B1
      More
    • positive

      US /ˈpɑzɪtɪv/

      UK /ˈpɒzətɪv/

      • Adjective
      • Showing agreement or support for something
      • Being sure about something; knowing the truth
      • Noun
      • A photograph in which light areas are light and dark areas are dark
      A2
      More
    • power on

      US /ˈpaʊɚ ɑn/

      UK /ˈpauə ɔn/

      • Phrasal Verb
      • To activate or switch on a device or machine.
      B1
      More
    • process

      US /ˈprɑsˌɛs, ˈproˌsɛs/

      UK /prə'ses/

      • Transitive Verb
      • To organize and use data in a computer
      • To deal with official forms in the way required
      • Noun (Countable/Uncountable)
      • Dealing with official forms in the way required
      • Set of changes that occur slowly and naturally
      A2TOEIC
      More
    • react

      US /riˈækt/

      UK /rɪ'ækt/

      • Intransitive Verb
      • To change when mixing with other chemicals
      • To behave or make a change in a particular way
      A2
      More
    • recharge

      US /riˈtʃɑrdʒ/

      UK /ˌri:'tʃɑ:dʒ/

      • Transitive Verb
      • To refill a battery, etc. with electricity
      • Verb (Transitive/Intransitive)
      • To re-energize yourself through rest or eating
      B2
      More
    • rechargeable

      US

      UK

      • Adjective
      • Capable of being recharged
      C1
      More
    • release

      US /rɪ'li:s/

      UK /rɪ'li:s/

      • Transitive Verb
      • To free someone from a responsibility or burden
      • To allow a film, music etc. to be sold/distributed
      • Noun
      • Act of freeing someone from a duty or burden
      • Introduction of a new product, film, book, etc.
      A2TOEIC
      More
    • rely

      US /rɪˈlaɪ/

      UK /rɪ'laɪ/

      • Intransitive Verb
      • Depend on with full trust or confidence
      • To trust or have confidence in someone.
      B2TOEIC
      More
    • rust

      US /rʌst/

      UK /rʌst/

      • Uncountable Noun
      • Reddish brown color
      • Disease causing red and brown spots on leaves
      • Intransitive Verb
      • To form a red crust on old iron and steel objects
      B1
      More
    • rusty

      US /ˈrʌsti/

      UK /'rʌstɪ/

      • Adjective
      • Performing badly from lack of practice
      • Covered with or consisting of rust
      B1
      More
    • scale

      US /skel/

      UK /skeɪl/

      • Noun (Countable/Uncountable)
      • Size, level, or amount when compared
      • Small hard plates that cover the body of fish
      • Verb (Transitive/Intransitive)
      • To change the size of but keep the proportions
      • To climb something large (e.g. a mountain)
      A2TOEIC
      More
    • solar

      US /ˈsolɚ/

      UK /'səʊlə(r)/

      • Adjective
      • Concerning the sun, or its heat
      B1
      More
    • solution

      US /səˈluʃən/

      UK /səˈlu:ʃn/

      • Noun (Countable/Uncountable)
      • Mix of a liquid and a solid or a gas
      • Way to solve or deal with a problem
      A2
      More
    • stabilize

      US /ˈstebəˌlaɪz/

      UK /'steɪbəlaɪz/

      • Transitive Verb
      • To make stable/consistent, with no major changes
      B1
      More
    • steady

      US /ˈstɛdi/

      UK /'stedɪ/

      • Adjective
      • Happening or developing at a regular rate
      • Continuing without stopping or changing over time
      • Transitive Verb
      • To make constant, unchanging or staying the same
      • To hold something/someone so they stop moving
      B2
      More
    • talking about

      US

      UK

      • Phrasal Verb
      • To discuss a particular topic.
      • To be constantly mentioning or bringing up a subject.
      A1
      More
    • think of

      US /θɪŋk ʌv/

      UK /θiŋk ɔv/

      • Phrasal Verb
      • To look on as (being something specific); consider
      • To consider or remember something.
      • Verb (Transitive/Intransitive)
      • To imagine or call something to mind
      A1
      More
    • too heavy

      US

      UK

      • Adjective
      • Having excessive weight; difficult to lift or move.
      • Excessively burdensome or difficult to manage.
      More
    • toxic

      US /ˈtɑksɪk/

      UK /ˈtɒksɪk/

      • Adjective
      • Poisonous; harmful
      • (Of relationships) harmful; causing conflict
      B2
      More
    • whole class

      US

      UK

      • Noun (Countable/Uncountable)
      • The entirety of a class of students.
      • Adjective
      • Involving or pertaining to the entire class.
      A1
      More
    • worth

      US /wɚθ/

      UK /wɜ:θ/

      • Noun (Countable/Uncountable)
      • the financial, practical or moral value of somebody/something
      • having a particular value, especially in money
      • Adjective
      • Having a specified value.
      A2
      More
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    01:03

    She took a brave step forward, leaving behind her comfort zone to chase her dreams.

    Vocabulary
    • brave

      adj. Having courage

    • comfort zone

      phr. A familiar situation where one feels safe

    Explanation
    a brave step is a noun phrase, where brave is an adjective modifying the noun step, meaning "a courageous step". forward is an adverb modifying step, meaning "ahead". The whole phrase serves as the object, answering the "what" of took (verb) — she took a brave step forward.

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    brave

    US/brev/
    UK/breɪv/
    adj.Brave
    v.t.To bravely face
    A2 Elementary

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    80
    B1US
    #battery#lithium#iron#electrolyte#energy#anode

    The Weirdest New Battery is... Rust

    0
    Susan posted on 2026/08/04
    Ever wondered what powers your devices or the grid? This video dives into the fascinating world of battery technology, from old-school lead-acid to modern lithium-ion, and even explores a surprising new contender: rust! You'll pick up key terms like 'anode,' 'cathode,' and 'electrolyte' while learning about the future of energy storage.

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