accelerate
US /ækˈsɛləˌret/
UK /əkˈseləreɪt/
- Transitive Verb
- To cause to occur earlier than expected
- To increase the speed or rate of something
B1TOEICMorealtitude
US /ˈæltɪˌtud,-ˌtjud/
UK /'æltɪtju:d/
- Noun
- Height of something above sea level
B2TOEICMoreatom
US /ˈætəm/
UK /'ætəm/
- Noun
- Smallest bit that matter can be broken down into
B1Moreauto
US /ˈɔ:toʊ/
UK /ˈɔ:təʊ/
- Noun
- Car; a road vehicle with four or more wheels
B2Morebattery
US /ˈbætəri/
UK /ˈbætri/
- Countable Noun
- Portable device that stores electricity
- Noun
- Large group of similar things functioning together
B1Morebeacon
US /ˈbikən/
UK /ˈbi:kən/
- Noun (Countable/Uncountable)
- Something providing guidance or hope to people
- Light or radio signal used to guide e.g. ships
B2Moreboost
US /bust/
UK /bu:st/
- Transitive Verb
- To increase something; to make something better
- To push someone or something up from beneath them
- Noun (Countable/Uncountable)
- An increase in something
B1TOEICMorecatch up
US /kætʃ ʌp/
UK /kætʃ ʌp/
- Phrasal Verb
- To become equal with another person
- To inform others of the latest news
- Verb (Transitive/Intransitive)
- To do something that you have not been able to do recently.
- To meet someone you know in order to talk to them and find out what they have been doing.
A1Morecharge
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
A2Morecheck out
US /tʃɛk aʊt/
UK /tʃek aut/
- Phrase
- Phrasal Verb
- To find out information about something
- To take books out of a library
A1Morecircular
US /ˈsɜ:rkjələ(r)/
UK /ˈsɜ:kjələ(r)/
- Adjective
- Shaped like a circle or part of a circle
- Noun
- Paper with news, ads, etc. sent round to people
B2Morecounterintuitive
US /ˌkaʊntərɪn'tju:ɪtɪv/
UK /kaʊntərɪn'tju:ɪtɪv/
- Adjective
- Contrary to what common sense would suggest
C2Moredescription
US /dɪˈskrɪpʃən/
UK /dɪˈskrɪpʃn/
- Noun
- Explanation of what something is like, looks like
- The type or nature of someone or something.
A2TOEICMoredetect
US /dɪˈtɛkt/
UK /dɪˈtekt/
- Transitive Verb
- To discover or identify the presence of something
A2TOEICMoredock
US /dɑ:k/
UK /dɒk/
- Transitive Verb
- To take away a part of an animal's tail
- To take away a part of someone's salary
- Noun
- Area in a harbor where boats arrive and are kept
B1Moredue to
US /du tu/
UK /dju: tu:/
- Preposition
- Because of; owing to
- Adjective
- Attributable to; caused by.
A1Moreefficient
US /ɪˈfɪʃənt/
UK /ɪˈfɪʃnt/
- Adjective
- Able to produce results without waste
- Capable of producing desired results with little or no waste (of time, energy, or other resources).
A2TOEICMoreellipse
US /ɪˈlɪps/
UK /ɪˈlɪps/
- Countable Noun
- Plane curve made by cone and plane intersecting
C1Moreelliptical
US /ɪˈlɪptɪkl/
UK /ɪˈlɪptɪkl/
- Adjective
- Indirect
- Making or drawn in an oval shape or movement
C1Moreemergency
US /ɪˈmɚdʒənsi/
UK /ɪ'mɜ:dʒənsɪ/
- Noun (Countable/Uncountable)
- Sudden event needing an immediate action
- A medical condition manifesting itself by acute symptoms of sufficient severity such that the absence of immediate medical attention could reasonably be expected to result in placing the patient's health in serious jeopardy.
- Adjective
- Used in an emergency; for use when something dangerous happens.
- Designed for use in an emergency.
A2TOEICMoreenergy
US /ˈɛnədʒi/
UK /'enədʒɪ/
- Noun (Countable/Uncountable)
- Physical or mental strength
- Enthusiasm and determination.
A2Moreeventually
US /ɪˈvɛntʃuəli/
UK /ɪˈventʃuəli/
- Adverb
- After a long time; after many attempts; in the end
- At some later time; in the future
A2Morefor example
US
UK
- Phrase
- As an illustration or instance.
formula
US /ˈfɔrmjələ/
UK /'fɔ:mjələ/
- Noun (Countable/Uncountable)
- A mathematical or scientific rule
- Plan, rule or method for doing or making something
A2TOEICMorefuel
US /ˈfjuəl/
UK /'fju:əl/
- Transitive Verb
- To give power to (a mob, anger, etc.); incite
- To provide gas or petrol for something
- Uncountable Noun
- Material used to produce heat or power when burned
A2TOEICMoregoing on
US /ˈɡoɪŋ ɑn/
UK /ˈgəʊɪŋ ɔn/
- Phrasal Verb
- To continue doing something
- To happen (usually negative)
A1Moregravity
US /ˈɡrævɪti/
UK /ˈgrævəti/
- Uncountable Noun
- (Of a situation) extreme seriousness
- Force making things fall towards the ground
B1TOEICMorehave to
US /hæv tu/
UK /ˈhæv tə/
- Auxiliary Verb
- Must do
A1Morein a series
US
UK
- Phrase
- Arranged or happening one after another.
- Occurring sequentially or in a specific order.
B1Morein fact
US /ɪn fækt/
UK /in fækt/
- Adverb
- Used to emphasize the truth of a statement, especially one that contrasts with or contradicts something else.
- Used to introduce a more detailed or surprising piece of information.
- Phrase
- Used to emphasize the truth of a statement, especially one that is surprising or contrary to what might be expected.
C1Morein the air
US
UK
- Phrase
- Present or circulating in the atmosphere.
- Felt or sensed by many people; circulating as a rumor or feeling.
- Adjective
- Being broadcast on radio or television.
A1Moreinstead of
US /ɪnˈstɛd ʌv/
UK /inˈsted ɔv/
- Preposition
- When one thing is replaced by another
- Adverb
- As a substitute or alternative.
A1Moreinward
US /ˈɪnwərd/
UK /ˈɪnwəd/
- Adjective
- At the inside of
B1Morekeep tabs on
US
UK
- Phrasal Verb
- To monitor closely; keep under surveillance.
A2Morekinetic
US /kɪˈnɛtɪk, kaɪ-/
UK /kɪˈnetɪk/
- Adjective
- Of or relating to movement
C1Moreknow about
US /noʊ əˈbaʊt/
UK /nəʊ əˈbaut/
- Phrasal Verb
- To have information or understanding of a subject or situation.
lifespan
US /ˈlaɪfspæn/
UK /ˈlaɪfspæn/
- Noun
- Length of time something is expected to last
B2Moremaneuver
US /məˈnuvɚ, -ˈnju-/
UK /mə'nu:və/
- Noun
- Military movement of troops
- Intransitive Verb
- To move troops in a battle
C2Moremeet up
US /mit ʌp/
UK /mi:t ʌp/
- Phrasal Verb
- To arrange to meet someone.
A1Moremultiple
US /ˈmʌltəpəl/
UK /ˈmʌltɪpl/
- Adjective
- Having or involving more than one of something
- Having or involving several parts, elements, or members.
- Countable Noun
- Number produced by multiplying a smaller number
- A number of identical circuit elements connected in parallel or series.
B1Morenap
US /næp/
UK /næp/
- Intransitive Verb
- To sleep or rest for a short time during the day
- Noun (Countable/Uncountable)
- Brief period of sleep or rest during the day
B2Morenavigation
US /ˌnævɪˈɡeʃən/
UK /ˌnævɪˈgeɪʃn/
- Noun
- Act of finding and following the correct course
B2Moreobject
US /ˈɑbdʒɪkt/
UK /'ɒbdʒɪkt/
- Noun (Countable/Uncountable)
- Something you can see or touch, but is not alive
- Goal or purpose of a particular plan or activity
- Verb (Transitive/Intransitive)
- To disagree; to protest against an idea or plan
- To state one's reason for disagreement
A2TOEICMoreobvious
US /ˈɑbviəs/
UK /ˈɒbviəs/
- Adjective
- Easily understood and clear; plain to see
- Easy to see or notice.
A2TOEICMoreon the way
US /ɑn ði we/
UK /ɔn ðə wei/
- Phrase
- During the journey to a particular place.
A1Moreoptimal
US /ˈɑptəməl/
UK /ˈɒptɪməl/
- Adjective
- Best or most desirable; best possible
- Most conducive to a favorable outcome.
B2Moreorbit
US /ˈɔrbɪt/
UK /'ɔ:bɪt/
- Noun
- Path an object takes as it circles another object
- The sphere of influence or control; range.
- Intransitive Verb
- To go around another object (often in space)
B2Moreorbital
US /ˈɔrbɪtl:/
UK /ˈɔ:bɪtl/
- Adjective
- Concerning an orbit
B2Moreoutlet
US /ˈaʊtˌlɛt, -lɪt/
UK /'aʊtlet/
- Noun (Countable/Uncountable)
- Place in a wall to supply electricity to a device
- A pipe, hole or wire through which something flows
B1TOEICMoreoverheat
US /ˌoʊvərˈhi:t/
UK /ˌəʊvəˈhi:t/
- Verb (Transitive/Intransitive)
- To become too hot
- To become too economically active; grow too fast
C1Moreparadox
US /ˈpærəˌdɑks/
UK /'pærədɒks/
- Noun
- Surprising statement containing two opposing ideas
B2Moreplanet
US /ˈplænɪt/
UK /'plænɪt/
- Noun (Countable/Uncountable)
- One of the bodies that orbit the sun
- A different world or sphere of existence.
- Proper Noun
- The earth.
A2Moreplug
US /plʌɡ/
UK /plʌg/
- Noun
- Wood, rubber or metal used to block a hole
- Thing on a wire to connect to electricity supply
- Transitive Verb
- To use an object to block a hole
- To promote or advertise a product
B1TOEICMoreridiculous
US /rɪˈdɪkjələs/
UK /rɪˈdɪkjələs/
- Adjective
- Funny or foolish; deserving to be laughed at
A2Morerocket
US /ˈrɑkɪt/
UK /'rɒkɪt/
- Noun
- Powerful engine that releases hot gases
- Dark green, hot-tasting salad leaf
- Verb (Transitive/Intransitive)
- To travel, increase, or rise very quickly
- To increase very rapidly and suddenly.
B1Moresatellite
US /ˈsætlˌaɪt/
UK /'sætəlaɪt/
- Noun (Countable/Uncountable)
- Device sent into space that aids communication
- Natural object in space that moves around another
B1Moreseemingly
US /ˈsiːmɪŋli/
UK /ˈsi:mɪŋli/
- Adverb
- Appearing to be but may not actually be; probably
B1Moresilicon
US /ˈsɪlɪkən, -ˌkɑn/
UK /ˈsɪlɪkən/
- Uncountable Noun
- Mineral used in making steel and computer parts
B2Moreslow down
US /slo daʊn/
UK /sləu daun/
- Phrasal Verb
- To reduce the speed
- To become less active or busy.
A1Moresolar
US /ˈsolɚ/
UK /'səʊlə(r)/
- Adjective
- Concerning the sun, or its heat
B1Moresolution
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
A2Morespacecraft
US /ˈspeɪskræft/
UK /ˈspeɪskrɑ:ft/
- Noun
- Vehicle capable of traveling to outer space
- An unmanned probe or satellite designed for space exploration.
C2Morespeed up
US /spid ʌp/
UK /spi:d ʌp/
- Phrasal Verb
- To move more quickly
A2Moresponsor
US /ˈspɑ:nsə(r)/
UK /ˈspɒnsə(r)/
- Noun
- Person that supports the passage of a new law
- Person giving money for someone's education
- Transitive Verb
- To support the passage of a new law
- To help someone succeed by giving them money
B1TOEICMorestatus
US /ˈstetəs, ˈstætəs/
UK /'steɪtəs/
- Uncountable Noun
- Position or rank relative to others in a society
- Legal position of a person or thing
A2TOEICMorestay in
US /ste ɪn/
UK /stei in/
- Phrasal Verb
- To remain inside one's home.
- Intransitive Verb
- To remain as an inpatient in a hospital.
talk about it
US /tɔk əˈbaʊt ɪt/
UK /tɔ:k əˈbaut it/
- Verb (Transitive/Intransitive)
- To discuss a particular subject.
A1Morethanks to
US /θæŋks tu/
UK /θæŋks tu:/
- Preposition
- Because of; as a result of.
A1Morewith it
US /wɪð ɪt/
UK /wið it/
- Adjective
- Intelligent, alert, and up-to-date.
- Understanding and knowledgeable about current trends or information.
A1More
Vocabulary
- speed up: To move more quickly
- catch up: To become equal with another person
- slow down: To reduce the speed
- have to: Must do
- stay in: To remain inside one's home.
- in the air: Present or circulating in the atmosphere.
- in a series: Arranged or happening one after another.
- know about: To have information or understanding of a subject or situation.
- on the way: During the journey to a particular place.
- due to: Because of; owing to
- meet up: To arrange to meet someone.
- with it: Intelligent, alert, and up-to-date.
- for example: As an illustration or instance.
- talk about it: To discuss a particular subject.
- in fact: Used to emphasize the truth of a statement, especially one that contrasts with or contradicts something else.
- keep tabs on: To monitor closely; keep under surveillance.
- instead of: When one thing is replaced by another
- going on: To continue doing something
- check out
- thanks to: Because of; as a result of.
- eventually: After a long time; after many attempts; in the end
- obvious: Easily understood and clear; plain to see
- ridiculous: Funny or foolish; deserving to be laughed at
- multiple: Having or involving more than one of something
- boost: To increase something; to make something better
- description: Explanation of what something is like, looks like
- improve: To make, or become, something better
- paradox: Surprising statement containing two opposing ideas
- fuel: To give power to (a mob, anger, etc.); incite
- status: Position or rank relative to others in a society
- gravity: (Of a situation) extreme seriousness
- counterintuitive: Contrary to what common sense would suggest
- efficient: Able to produce results without waste
- series: Set of stories or articles on a particular subject
- optimal: Best or most desirable; best possible
- formula: A mathematical or scientific rule
- seemingly: Appearing to be but may not actually be; probably
- charge: To run quickly toward someone to attack them
- orbit: Path an object takes as it circles another object
- planet: One of the bodies that orbit the sun
- due: When something is required or expected
- throw: To use your arm to make something fly in the air
- emergency: Sudden event needing an immediate action
- accelerate: To cause to occur earlier than expected
- fall: Season after summer and before winter; Autumn
- energy: Physical or mental strength
- altitude: Height of something above sea level
- solution: Mix of a liquid and a solid or a gas
- detect: To discover or identify the presence of something
- object: Something you can see or touch, but is not alive
- plug: Wood, rubber or metal used to block a hole
- satellite: Device sent into space that aids communication
- lifespan: Length of time something is expected to last
- maneuver: Military movement of troops
- continue: To do something without stopping, or after pausing
- catch: Amount of something that has been caught
- navigation: Act of finding and following the correct course
- support: To give assistance or advice to someone
- sponsor: Person that supports the passage of a new law
- solar: Concerning the sun, or its heat
- outlet: Place in a wall to supply electricity to a device
- space: Empty area kept for a specific reason, like a car
- nap: To sleep or rest for a short time during the day
- bore: To accept (responsibilities or duties)
- rocket: Powerful engine that releases hot gases
- real: Actually existing or happening, not imagined
- atom: Smallest bit that matter can be broken down into
- climb: To rise gradually and steadily to a higher point
- design: To plan in a particular way to fulfill a purpose
- beacon: Something providing guidance or hope to people
- stay: To keep trying without giving up
- earth: Wire connecting an electrical device to the ground
- elliptical: Indirect
- circular: Shaped like a circle or part of a circle
- spacecraft: Vehicle capable of traveling to outer space
- battery: Portable device that stores electricity
- kinetic: Of or relating to movement
- inward: At the inside of
- dock: To take away a part of an animal's tail
- silicon: Mineral used in making steel and computer parts
- orbital: Concerning an orbit
- auto: Car; a road vehicle with four or more wheels
- ellipse: Plane curve made by cone and plane intersecting
- overheat: To become too hot
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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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林宜悉 posted on 2026/06/04Ever wondered how spacecraft actually change orbits? This video dives into two mind-bending paradoxes of space navigation, explaining why you have to speed up to get to a slower orbit and how to catch up to a space station by slowing down! You'll pick up some fascinating vocabulary related to orbital mechanics and counterintuitive physics.
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