at best
US /æt bɛst/
UK /æt best/
- Phrase
- Under the most optimistic or favorable circumstances; the most that can be hoped for.
A1Moreboom
US /bum/
UK /bu:m/
- Noun (Countable/Uncountable)
- Very fast increase in growth or popularity
- A very loud and deep sound
- Intransitive Verb
- To experience a rapid increase in growth
- To make a very loud and deep sound
B1Morebyproduct
US /ˈbaɪˌprɑdəkt/
UK /'baɪˌprɒdʌkt/
- Noun
- A waste product made from making something else
C1Morecell
US /sɛl/
UK /sel/
- Countable Noun
- Smallest unit of living things in biology
- Group of people - often from a secret organization
A2Morecheck out
US /tʃɛk aʊt/
UK /tʃek aut/
- Phrase
- Phrasal Verb
- To find out information about something
- To take books out of a library
A1Moreelectricity
US /ɪlɛkˈtrɪsɪti,ˌilɛk-/
UK /ɪˌlekˈtrɪsəti/
- Uncountable Noun
- Energy generated positive and negative charges
- The study or science of electric charges and currents.
A2Moreenergy
US /ˈɛnədʒi/
UK /'enədʒɪ/
- Noun (Countable/Uncountable)
- Physical or mental strength
- Enthusiasm and determination.
A2Morefiber
US /'faɪbə/
UK /'faɪbə/
- Noun (Countable/Uncountable)
- Basic character and nature of a person
- Stringy substance found in food, e.g. wholewheat
C2Morefor example
US
UK
- Phrase
- As an illustration or instance.
in mind
US /ɪn maɪnd/
UK /in maind/
- Phrase
- Being aware of or considering something.
- To remember or consider something.
A2Moreof course
US /ʌv kɔː(r)s/
UK /ɔv kɔː(r)s/
- Adverb
- Sure ; Certainly
- Phrase
- For sure; certainly
A2Moreparticle
US /ˈpɑrtɪkəl/
UK /ˈpɑ:tɪkl/
- Noun
- Adverb or preposition that joins with a verb
- Tiny piece or quantity of something
B1Morepollution
US /pəˈluʃən/
UK /pəˈlu:ʃn/
- Uncountable Noun
- Dangerous substances released into an environment
- The action of polluting; the state of being polluted.
B1TOEICMorequantum
US /ˈkwɑ:ntəm/
UK /ˈkwɒntəm/
- Noun (Countable/Uncountable)
- The smallest unit or amount of energy
B2Moreshrimp
US /ʃrɪmp/
UK /ʃrɪmp/
- Countable Noun
- Small edible salt-water shellfish with many legs
- Someone who is small and weak
B1Moresolar cells
US
UK
- Noun (plural)
- Photovoltaic cells that convert sunlight into electricity.
B2Moresustainability
US
UK
- Uncountable Noun
- Property of being able to be continued/repeated
- The ability to be maintained at a certain rate or level; avoidance of the depletion of natural resources in order to maintain an ecological balance.
B2Moretelescope
US /ˈtelɪskoʊp/
UK /ˈtelɪskəʊp/
- Noun
- Tube-shaped device used to see a great distance
- Transitive Verb
- To shorten by compacting tubes inside each other
C2Moreunited
US /juˈnaɪtɪd/
UK /jʊ'naɪtɪd/
- Verb (Transitive/Intransitive)
- To join or come together for the same goal
- Adjective
- Joined or combined together
A2Moreup there
US /ʌp ðɛr/
UK /ʌp ðɛə/
- Adverb
- In or to a higher place or position; far away.
- In heaven.
A1Moreused to
US /juzd tu/
UK /ˈju:st tə/
- Adjective
- Did regularly before, but don't do now
- Auxiliary Verb
- Have done before, but do not do now
A1More
Vocabulary
- used to: Did regularly before, but don't do now
- solar cells: Photovoltaic cells that convert sunlight into electricity.
- of course: Sure ; Certainly
- in mind: Being aware of or considering something.
- check out
- for example: As an illustration or instance.
- at best: Under the most optimistic or favorable circumstances; the most that can be hoped for.
- up there: In or to a higher place or position; far away.
- effect: An advantage, benefit
- energy: Physical or mental strength
- cell: Smallest unit of living things in biology
- boom: Very fast increase in growth or popularity
- fiber: Basic character and nature of a person
- power: Legal or official right to perform certain actions
- particle: Adverb or preposition that joins with a verb
- united: To join or come together for the same goal
- shrimp: Small edible salt-water shellfish with many legs
- electricity: Energy generated positive and negative charges
- sustainability: Property of being able to be continued/repeated
- pollution: Dangerous substances released into an environment
- quantum: The smallest unit or amount of energy
- byproduct: A waste product made from making something else
- telescope: Tube-shaped device used to see a great distance
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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
How We Turn Solar Energy Into Electricity
0
elearn posted on 2015/09/28Ever wondered how we capture the sun's power? This video dives into the fascinating science behind turning solar energy into electricity, from the basic photoelectric effect to cutting-edge tech like shrimp shell solar cells! You'll pick up some awesome advanced vocabulary and learn how this amazing process works.
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