count down

柯林斯词典

countdown /ˈkaʊntˌdaʊn/

• 1. N-SING A countdown is the counting aloud of numbers in reverse order before something happens, especially before a spacecraft is launched. 倒計時[also no det]

  The countdown has begun for the launch of the space shuttle. 航天飛機發射前的倒計時已經開始。

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