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crucial
US /ˈkruʃəl/
・
UK /'kru:ʃl/
- Adjective
- Extremely important or necessary
- Of great importance to the success of something.
B1
More fatigue
US /fəˈtiɡ/
・
UK /fəˈti:g/
- Uncountable Noun
- Breaking due to being moved or bent many times
- Being very tired
- Transitive Verb
- To cause someone or something to become very tired
B2
More tough
US /tʌf/
・
UK /tʌf/
- Adjective
- (Of food) difficult to chew or bite through
- Very difficult to do or deal with
- Noun
- A rough and aggressive person.
A2
More Use Energy
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