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    ensure
    /ɪnˈʃʊə(r)/
    /-ˈʃɔː(r)/
    /ɪnˈʃʊr/
    /ɪn'ʃur/
    to make sure that something happens or is definite保证；担保；确保
    The book ensured his success.这本书保证了他的成功。
    Please ensure (that) all lights are switched off.请务必将所有灯都关掉。
    Variant:
    insure

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