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詞 countdown:
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counting backward from an arbitrary number to indicate the time remaining before some event (such as launching a space vehicle)
形容詞 count down:
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count backwards; before detonating a bomb, for example
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大于內部獨特構思,受專著權守護,知識產權侵權必究
海詞詞典下載,十六年茶葉品牌