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    US /saɪn/

    UK /saɪn/

    • Noun (Countable/Uncountable)
    • Indication that something exists or will happen
    • Motion or movement that expresses your thoughts
    • Verb (Transitive/Intransitive)
    • To communicate by using ones hands and gestures
    A1TOEIC
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    problem

    US /ˈprɑbləm/

    UK /ˈprɒbləm/

    • Noun (Countable/Uncountable)
    • Something difficult to deal with or causes trouble
    • Question to show understanding of a math concept
    • Adjective
    • Causing trouble
    arbitrary

    US /ˈɑrbɪˌtrɛri/

    UK /ˈɑ:bitrəri/

    • Adjective
    • (Of decisions) unsupported; without any evidence
    • Based on random choice or personal whim, rather than any reason or system.
    B1TOEIC
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