allow for
US
UK
- Verb (Transitive/Intransitive)
- To take into consideration
A1Moreangle
US /ˈæŋɡəl/
UK /ˈæŋgl/
- Noun
- Place where two lines or surfaces meet
B1TOEICMoreanti
US /ˈæntaɪ, -ti/
UK /'æntɪ/
- Adjective
- A prefix meaning 'against' or 'opposed'
B2Morebase
US /bes/
UK /beɪs/
- Noun (Countable/Uncountable)
- Place military personnel live, train, and operate
- Bottom part of an object that touches a surface
- Transitive Verb
- To use as the starting point or origin for
- To have as the main location for (company, etc.)
A2TOEICMorebeta
US /'beɪtə/
UK /'bi:tə/
- Noun
- Test version of a product or software
B2Morebond
US /bɑnd/
UK /bɒnd/
- Noun (Countable/Uncountable)
- Rope, chain or other thing used to tie someone up
- Closeness that is shared between people or groups
- Verb (Transitive/Intransitive)
- To develop a close relationship with
- To become joined or connected, e.g. using glue
A2TOEICMorecarbon
US /ˈkɑrbən/
UK /'kɑ:bən/
- Uncountable Noun
- Chemical element with an atomic number of 6
B1Morechannel
US /ˈtʃænəl/
UK /'tʃænl/
- Noun (Countable/Uncountable)
- Long hole dug in the ground, e.g. to move water
- TV or radio station or its programs
- Transitive Verb
- To dig a long hole for carrying water
- To send (e.g. money) to a certain place or person
B1Moreconfiguration
US /kənˌfɪɡjəˈreʃən/
UK /kənˌfɪgəˈreɪʃn/
- Noun
- A shape or outline; a method of arrangement
B2Moreconstant
US /ˈkɑnstənt/
UK /'kɒnstənt/
- Adjective
- Happening frequently or without pause
- Remaining the same over time or not changing.
- Noun
- Thing that happens always or at a regular rate
- A physical quantity that is believed to have a fixed value and is used in calculations.
A2TOEICMorecorrect
US /kəˈrɛkt/
UK /kə'rekt/
- Adjective
- Being suitable and appropriate for an occasion
- True or accurate
- Transitive Verb
- To fix a problem
- To write marks on a piece of work to show mistakes
A2Moredegree
US /dɪˈɡri/
UK /dɪˈgri:/
- Noun (Countable/Uncountable)
- Amount or extent of something
- Unit for measuring temperature or angles
A2TOEICMoreelectron
US /ɪˈlektrɑ:n/
UK /ɪˈlektrɒn/
- Countable Noun
- A negatively charged particle
B2Moreelimination
US /ɪˌlɪməˈneʃən/
UK /ɪˌlɪmɪ'neɪʃn/
- Noun (Countable/Uncountable)
- Act or process of removing or being removed
- Defeating a team to remove them from a contest
B1Moreequilibrium
US /ˌikwəˈlɪbriəm, ˌɛkwə-/
UK /ˌi:kwɪˈlɪbriəm/
- Noun (Countable/Uncountable)
- A state of balance or harmony
- Calm, quiet, undisturbed emotional state
C2TOEICMoreequivalent
US /ɪˈkwɪvələnt/
UK /ɪˈkwɪvələnt/
- Adjective
- Equal to something in value, use or meaning
- Having the same meaning or significance.
- Noun
- Thing like another in quality, quantity or degree
B1TOEICMoreextract
US /ɪkˈstrækt/
UK /'ekstrækt/
- Noun (Countable/Uncountable)
- Essential ingredient of a natural thing
- Part taken from a longer written work
- Transitive Verb
- To get a substance out of a plant, etc.
- To get a person to share secret information
B1TOEICMorehave to
US /hæv tu/
UK /ˈhæv tə/
- Auxiliary Verb
- Must do
A1Morehydrogen
US /ˈhaɪdrədʒən/
UK /ˈhaɪdrədʒən/
- Uncountable Noun
- Lightest of all chemical elements
B1Moreimply
US /ɪmˈplaɪ/
UK /ɪmˈplaɪ/
- Transitive Verb
- To suggest something, without saying it directly
- To involve or indicate by inference, association, or necessary consequence rather than by direct statement
A2TOEICMorein terms of
US
UK
- Phrase
- With regard to; concerning a particular aspect.
A1Moreinstant
US /ˈɪnstənt/
UK /ˈɪnstənt/
- Adjective
- (Food) requiring very little preparation
- Occurring immediately
- Noun
- A very short period of time
A2TOEICMorelateral
US /ˈlætərəl/
UK /'lætərəl/
- Adjective
- On the side; moving sideways
B2Morelinear
US /ˈlɪniər/
UK /ˈlɪniə(r)/
- Adjective
- Made of lines
- Series of progressing from one stage to another
B1Morelook at
US /lʊk æt/
UK /luk æt/
- Phrasal Verb
- To use your eyes to focus on something
- To focus your eyes on something carefully
A1Moremechanism
US /ˈmɛkəˌnɪzəm/
UK /'mekənɪzəm/
- Noun (Countable/Uncountable)
- Part of a machine that performs a certain function
- System or process for achieving a certain result
B1Moreoccur
US /əˈkɚ/
UK /əˈkɜ:(r)/
- Intransitive Verb
- To come to pass or to happen
- To be found to exist; to be present.
A2TOEICMoreorbital
US /ˈɔrbɪtl:/
UK /ˈɔ:bɪtl/
- Adjective
- Concerning an orbit
B2Moreoverlap
US /ˌoʊvərˈlæp/
UK /ˌəʊvəˈlæp/
- Verb (Transitive/Intransitive)
- To lie over or cover a part of something else
- To happen at the same time as another event
- Noun (Countable/Uncountable)
- Amount shared in the same space, form, idea
B1TOEICMoreparticipate
US /pɑ:rˈtɪsɪpeɪt/
UK /pɑ:ˈtɪsɪpeɪt/
- Intransitive Verb
- To take part with others in doing something
- To be involved in a discussion or conversation.
B1TOEICMorepi
US /paɪ/
UK /paɪ/
- Noun
- The ratio of the circumference to the diameter
B2Moreprofessor
US /prəˈfɛsɚ/
UK /prəˈfesə(r)/
- Noun (Countable/Uncountable)
- Teacher who teaches at a college or university
- A title given to a teacher of the highest academic rank in a college or university.
A2Moreprojection
US /prəˈdʒɛkʃən/
UK /prəˈdʒekʃn/
- Noun (Countable/Uncountable)
- A prediction; guess about future developments
- An image on a screen
B1TOEICMorepromote
US /prəˈmoʊt/
UK /prəˈməʊt/
- Transitive Verb
- To try to encourage popularity/sales of a product
- To move someone to a higher position or rank
A2TOEICMoreproton
US /ˈproʊtɑ:n/
UK /ˈprəʊtɒn/
- Countable Noun
- Tiny part of atom with positive electrical charge
B2Morereaction
US /riˈækʃən/
UK /rɪ'ækʃn/
- Noun
- Bodily response to a drug or something eaten
- Feeling or action in response to something
A2Morerecall
US /rɪˈkɔl/
UK /rɪˈkɔ:l/
- Noun (Countable/Uncountable)
- (Company) asking for the return of faulty goods
- Act of remembering events or details of the past
- Transitive Verb
- (Company) to ask for the return of faulty goods
- To remember events or details of the past
A2Morerespect
US /rɪˈspɛkt/
UK /rɪ'spekt/
- Transitive Verb
- To follow the established rules
- To think very highly of another person
- Noun
- Behavior that follows the established rules
- Regard or admiration for someone or something
A2TOEICMorerevisit
US /riˈvɪzɪt/
UK /ˌri:ˈvɪzɪt/
- Transitive Verb
- To talk or think about something again
- To visit some place or someone again
B1Morering in
US
UK
- Phrasal Verb
- To call by telephone.
- To celebrate the start of something, especially a new year.
A2Morerotate
US /ˈroʊteɪt/
UK /rəʊˈteɪt/
- Verb (Transitive/Intransitive)
- To regularly change people who perform a role
- To regularly change the crops that grow in a field
B2Morerotation
US /roʊˈteɪʃn/
UK /rəʊˈteɪʃn/
- Uncountable Noun
- Regular change of the crops grown in a field
- Group who take turns performing a certain task
B2Morescience
US /ˈsaɪəns/
UK /'saɪəns/
- Uncountable Noun
- Study of the physical world, based on facts
A2TOEICMoresigma
US /'sɪɡmə/
UK /ˈsɪgmə/
- Noun
- 18th letter of the Greek alphabet -
C1Morestructure
US /ˈstrʌk.tʃɚ/
UK /ˈstrʌk.tʃə/
- Noun (Countable/Uncountable)
- The way in which the parts of a system or object are arranged or organized, or a system arranged in this way
- A building or other man-made object.
- Transitive Verb
- To plan, organize, or arrange the parts of something
A2TOEICMorestuff
US /stʌf/
UK /stʌf/
- Uncountable Noun
- Generic description for things, materials, objects
- Transitive Verb
- To push material inside something, with force
B1Moresubscribe
US /səbˈskraɪb/
UK /səb'skraɪb/
- Verb (Transitive/Intransitive)
- To regularly pay to receive a service
B1TOEICMorethink about
US /θɪŋk əˈbaʊt/
UK /θiŋk əˈbaut/
- Phrasal Verb
- To consider something carefully.
- To remember or call to mind.
A1Moreto the left
US
UK
- Phrase
- In or toward the left direction.
- Situated on the left side of.
up top
US
UK
- Adverb
- In or at the highest position or location.
- Interjection
- A gesture involving raising a hand for a high-five, often used as a greeting or congratulatory signal.
B2Morewith respect to
US /wɪð rɪˈspɛkt tu/
UK /wið risˈpekt tu:/
- Preposition
- In relation to; regarding.
- Phrase
- In relation to; concerning.
A1More
Vocabulary
- to the left: In or toward the left direction.
- with respect to: In relation to; regarding.
- look at: To use your eyes to focus on something
- up top: In or at the highest position or location.
- allow for: To take into consideration
- ring in: To call by telephone.
- think about: To consider something carefully.
- in terms of
- have to: Must do
- stuff: Generic description for things, materials, objects
- subscribe: To regularly pay to receive a service
- equivalent: Equal to something in value, use or meaning
- figure: To appear in a game, play or event
- constant: Happening frequently or without pause
- structure: The way in which the parts of a system or object are arranged or organized, or a system arranged in this way
- position: Person's opinion or attitude about something
- instant: (Food) requiring very little preparation
- bond: Rope, chain or other thing used to tie someone up
- mechanism: Part of a machine that performs a certain function
- occur: To come to pass or to happen
- explain: To make clear or easy to understand by describing
- simply: In an easy or clear manner
- form: Sports team or person's current winning record
- extract: Essential ingredient of a natural thing
- reaction: Bodily response to a drug or something eaten
- reason: To think and make conclusions in a logical manner
- rest: Time when one relaxes, sleeps, or is inactive
- respect: To follow the established rules
- degree: Amount or extent of something
- participate: To take part with others in doing something
- correct: Being suitable and appropriate for an occasion
- leave: To go away from; depart
- promote: To try to encourage popularity/sales of a product
- lot: What happens to a person in life from chance; fate
- channel: Long hole dug in the ground, e.g. to move water
- carbon: Chemical element with an atomic number of 6
- science: Study of the physical world, based on facts
- imply: To suggest something, without saying it directly
- order: Religious or social group, as of nuns
- system: Set of organized, planned ideas that work together
- recall: (Company) asking for the return of faulty goods
- overlap: To lie over or cover a part of something else
- hydrogen: Lightest of all chemical elements
- front: Behavior not showing a person's true feelings
- rotation: Regular change of the crops grown in a field
- equilibrium: A state of balance or harmony
- product: Item that can be bought
- part: Division of a book
- configuration: A shape or outline; a method of arrangement
- professor: Teacher who teaches at a college or university
- projection: A prediction; guess about future developments
- group: Two or more musicians who play music together
- rotate: To regularly change people who perform a role
- base: Place military personnel live, train, and operate
- angle: Place where two lines or surfaces meet
- anti: A prefix meaning 'against' or 'opposed'
- revisit: To talk or think about something again
- lateral: On the side; moving sideways
- linear: Made of lines
- elimination: Act or process of removing or being removed
- proton: Tiny part of atom with positive electrical charge
- orbital: Concerning an orbit
- electron: A negatively charged particle
- beta: Test version of a product or software
- pi: The ratio of the circumference to the diameter
- sigma: 18th letter of the Greek alphabet -
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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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Ken Lee posted on 2026/09/29Ever wondered about the tricky E2 reaction in cyclic systems? Professor Dave breaks down why the anti-conformation is crucial for elimination and how it differs from linear systems, highlighting key terms like 'axial' and 'equatorial' positions. This is a fantastic chance to really nail down this complex organic chemistry concept!
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