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    crucial

    US /ˈkruʃəl/

    UK /'kru:ʃl/

    • Adjective
    • Extremely important or necessary
    • Of great importance to the success of something.
    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.
    engage

    US /ɪn'gedʒ/

    UK /ɪn'ɡeɪdʒ/

    • Transitive Verb
    • To start to fight with an enemy
    • To hire someone for a task or job
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    guarantee

    US /ˌɡærənˈti/

    UK /ˌɡærən'ti:/

    • Transitive Verb
    • To promise to repair a broken product
    • To promise that something will happen or be done
    • Countable Noun
    • A promise to repair a broken product
    • Promise that something will be done as expected
    A2TOEIC
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