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    expert

    US /ˈɛkˌspɚt/

    UK /'ekspɜ:t/

    • Countable Noun
    • Skillful person with special knowledge
    • Adjective
    • Having special knowledge or skill
    A2TOEIC
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    launch

    US /lɔntʃ, lɑntʃ/

    UK /lɔ:ntʃ/

    • Noun
    • Starting a new project; introducing new product
    • Act of firing rockets into the air
    • Transitive Verb
    • To start a new project; start selling a product
    • To put a rocket into the air
    A2TOEIC
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    reason

    US /ˈrizən/

    UK /'ri:zn/

    • Intransitive Verb
    • To think and make conclusions in a logical manner
    • Noun (Countable/Uncountable)
    • Ability to think about facts and form a judgment
    • Explanation for why something occurred or was done
    A1TOEIC
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    definitive

    US /dɪˈfɪnɪtɪv/

    UK /dɪˈfɪnətɪv/

    • Adjective
    • Clear and leaving no further question
    • Considered to be the best and most authoritative of its kind.
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