at a time
US /æt e taɪm/
UK /æt ə taim/
- Phrase
- Separately; one by one
- Simultaneously; together
A1Moreaware
US /əˈwɛr/
UK /əˈwɛə/
- Adjective
- Knowing or feeling that something exists
A2TOEICMorebaffle
US /ˈbæfəl/
UK /'bæfl/
- Transitive Verb
- To puzzle; to confuse
B2Morebottom
US /ˈbɑtəm/
UK /'bɒtəm/
- Noun
- The part of your body you sit on
- Lowest position, often in a company or contest
- Verb (Transitive/Intransitive)
- To hit the lowest part of something
- To provide with a bottom.
A2TOEICMorebounce
US /baʊns/
UK /baʊns/
- Uncountable Noun
- A person's energy or confidence
- Quality causing a person's hair to appear healthy
- Intransitive Verb
- To move around energetically, playfully
- (Of check) to be rejected due to inadequate funds
B1Morecollapse
US /kəˈlæps/
UK /kə'læps/
- Verb (Transitive/Intransitive)
- To fold (e.g. a stroller) down to make it smaller
- To suddenly fall down or break apart into pieces
- Noun
- The sudden failure of a structure or system.
- The sudden failure of a bodily organ or function.
B1Moreconclusion
US /kənˈkluʒən/
UK /kənˈklu:ʒn/
- Noun
- End of something; finish
- Judgment or opinion after thinking for a while
A2Moredevice
US /dɪˈvaɪs/
UK /dɪˈvaɪs/
- Noun (Countable/Uncountable)
- Object, machine, or equipment for a specific use
- Method of doing something; a way
A2TOEICMoreelectron
US /ɪˈlektrɑ:n/
UK /ɪˈlektrɒn/
- Countable Noun
- A negatively charged particle
B2Moreemerge
US /ɪˈmɚdʒ/
UK /ɪ'mɜ:dʒ/
- Intransitive Verb
- To rise or appear out of some background
- To become known or apparent.
A2TOEICMoreexperiment
US /ɪkˈspɛrəmənt/
UK /ɪk'sperɪmənt/
- Noun (Countable/Uncountable)
- Test performed to assess new ideas or theories
- A course of action tentatively adopted without being sure of the eventual outcome.
- Verb (Transitive/Intransitive)
- To create and perform tests to research something
- To try something new that you haven't tried before
A2TOEICMorefunction
US /ˈfʌŋkʃən/
UK /'fʌŋkʃn/
- Noun
- Social event, or party such as a wedding
- Mathematical operation used in calculations
- Intransitive Verb
- To serve a certain purpose or role
- To be operating, working or achieving its purpose
A2TOEICMorehave to
US /hæv tu/
UK /ˈhæv tə/
- Auxiliary Verb
- Must do
A1Morein line with
US /ɪn laɪn wɪð/
UK /in lain wið/
- Phrase
- In agreement with; conforming to.
- In the same direction or alignment as.
- Preposition
- In agreement or conformity with.
A2Moreinfamous
US /ˈɪnfəməs/
UK /'ɪnfəməs/
- Adjective
- Famous because of something bad
B2Moreintensity
US /ɪnˈtɛnsɪti/
UK /ɪn'tensətɪ/
- Uncountable Noun
- Great energy, strength, or concentration
- The quality of being intense; the degree or amount of strength, force, etc.
A2TOEICMoreinterfere
US /ˌɪntɚˈfɪr/
UK /ˌɪntə'fɪə(r)/
- Intransitive Verb
- To get involved in something not your business
- Transitive Verb
- To prevent a process or activity from continuing or being carried out properly.
B1TOEICMoreinterference
US /ˌɪntərˈfɪrəns/
UK /ˌɪntəˈfɪərəns/
- Noun (Countable/Uncountable)
- Unwanted involvement in the concerns of others
- Signal interrupting a radio or television signal
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
A1Moremarble
US /ˈmɑrbəl/
UK /'mɑ:bl/
- Noun (Countable/Uncountable)
- A hard type of stone, often used in monuments
- Adjective
- Made of or resembling marble.
- Having a veined or swirled appearance like marble.
B1Moremysterious
US /mɪˈstɪriəs/
UK /mɪˈstɪəriəs/
- Adjective
- Unusual; hard to understand or work out
A2Moreobject
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
A2TOEICMoreobserve
US /əbˈzɜ:rv/
UK /əbˈzɜ:v/
- Verb (Transitive/Intransitive)
- To celebrate a particular holiday/religious event
- To obey or follow laws, rules, or customs
A2TOEICMoreobserver
US /əbˈzɜ:rvə(r)/
UK /əbˈzɜ:və(r)/
- Noun (Countable/Uncountable)
- Someone whose job it is to watch or notice things
- Someone who watches an event without getting involved.
- Proper Noun
- Name of a newspaper.
B1Moreparticle
US /ˈpɑrtɪkəl/
UK /ˈpɑ:tɪkl/
- Noun
- Adverb or preposition that joins with a verb
- Tiny piece or quantity of something
B1Morepattern
US /ˈpætən/
UK /'pætn/
- Noun (Countable/Uncountable)
- Model to follow in making or doing something
- Colors or shapes which are repeated on objects
- Transitive Verb
- To copy the way something else is made
- To decorate with a pattern.
A2TOEICMorepeek
US /pik/
UK /pi:k/
- Intransitive Verb
- To look at something quickly (often secretly)
- Noun
- A quick look at something (often secretly)
B2Morequantum
US /ˈkwɑ:ntəm/
UK /ˈkwɒntəm/
- Noun (Countable/Uncountable)
- The smallest unit or amount of energy
B2Moreradiate
US /ˈrediˌet/
UK /ˈreɪdieɪt/
- Verb (Transitive/Intransitive)
- To show a lot of feeling clearly
- To spread out from a center
B1Morerandomly
US /'rændəmlɪ/
UK /'rændəmlɪ/
- Adverb
- With no pattern or clear purpose; by chance
B1TOEICMoreslit
US /slɪt/
UK /slɪt/
- Transitive Verb
- To make a narrow cut
B2Morestream
US /strim/
UK /stri:m/
- Intransitive Verb
- To send a constant flow of data over the internet
- Noun
- Classes split into ability levels
- A small river
A2Morestrike
US /straɪk/
UK /straɪk/
- Transitive Verb
- To hit something
- To remove or erase.
- Noun (Countable/Uncountable)
- A punch or hit
- Fact of not hitting the ball when playing baseball
A2TOEICMoretiny
US /ˈtaɪni/
UK /'taɪnɪ/
- Adjective
- Very, very small
A2Moreto do with
US
UK
- Phrasal Verb
- To be about something; concern
A1Moreweirdness
US /wɪrdnəs/
UK /wɪədnəs/
- Uncountable Noun
- Quality of being unusual and strange
B1More
Vocabulary
- look at: To use your eyes to focus on something
- in line with: In agreement with; conforming to.
- at a time: Separately; one by one
- to do with: To be about something; concern
- have to: Must do
- pattern: Model to follow in making or doing something
- matter: To be of great importance; to count
- completely: In every way or as much as possible
- aware: Knowing or feeling that something exists
- experiment: Test performed to assess new ideas or theories
- interfere: To get involved in something not your business
- sense: Certain mental feeling or emotion
- expect: To believe something is probably going to happen
- strike: To hit something
- imagine: To think creatively about; form mental picture of
- measure: Plan to achieve a desired result
- bit: Device put in a horse's mouth to control it
- mysterious: Unusual; hard to understand or work out
- collapse: To fold (e.g. a stroller) down to make it smaller
- function: Social event, or party such as a wedding
- intensity: Great energy, strength, or concentration
- mean: Average of a set of numbers
- clever: Funny in a way that shows intelligence
- similar: Nearly the same; alike
- tiny: Very, very small
- emerge: To rise or appear out of some background
- simply: In an easy or clear manner
- conclusion: End of something; finish
- observe: To celebrate a particular holiday/religious event
- create: To make, cause, or bring into existence
- throw: To use your arm to make something fly in the air
- infamous: Famous because of something bad
- device: Object, machine, or equipment for a specific use
- produce: Fresh foods such as fruits and vegetables
- bounce: A person's energy or confidence
- strange: Unusual or odd; surprising because unexpected
- object: Something you can see or touch, but is not alive
- stream: To send a constant flow of data over the internet
- randomly: With no pattern or clear purpose; by chance
- bottom: The part of your body you sit on
- particle: Adverb or preposition that joins with a verb
- quantum: The smallest unit or amount of energy
- marble: A hard type of stone, often used in monuments
- peek: To look at something quickly (often secretly)
- interference: Unwanted involvement in the concerns of others
- slit: To make a narrow cut
- radiate: To show a lot of feeling clearly
- observer: Someone whose job it is to watch or notice things
- baffle: To puzzle; to confuse
- electron: A negatively charged particle
- weirdness: Quality of being unusual and strange
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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
Easy Quantum Mechanics
0
麥嘉莉 posted on 2025/09/22Ever wondered how tiny particles can act like both waves and particles? This video dives into the mind-bending double-slit experiment, explaining wave-particle duality and the observer effect with clear examples. You'll boost your understanding of quantum mechanics and pick up some fascinating new vocabulary along the way!
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