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    crucial

    US /ˈkruʃəl/

    UK /'kru:ʃl/

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

    US /fɪˈnɑməˌnɑn, -nən/

    UK /fə'nɒmɪnən/

    • Noun (Countable/Uncountable)
    • Unusual event, fact that can be studied
    • Interesting or unusual person, group
    immune

    US /ɪˈmjoon/

    UK /ɪˈmju:n/

    • Adjective
    • Having a special protection from, e.g. the law
    • Protected against a particular disease or condition because of antibodies or vaccination.
    reveal

    US /rɪˈvil/

    UK /rɪ'vi:l/

    • Transitive Verb
    • To show something that was hidden before
    A2TOEIC
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