劍橋詞典[ 可數名詞：有復數形式的名詞 ] the act of counting backwards to zero 倒計時 The countdown to the rocket launch will begin at 9.00 a.m. 火箭發(fā)射將于上午9點進入倒計時。 [ 單數名詞 ] a short period of time leading to an important event 倒計時階段 The countdown to the election has already begun . 選舉已開始進入倒計時階段。 返回 countdown