劍橋詞典[ 可數(shù)名詞：有復(fù)數(shù)形式的名詞 ] the act of counting backwards to zero 倒計(jì)時(shí) The countdown to the rocket launch will begin at 9.00 a.m. 火箭發(fā)射將于上午9點(diǎn)進(jìn)入倒計(jì)時(shí)。 [ 單數(shù)名詞 ] a short period of time leading to an important event 倒計(jì)時(shí)階段 The countdown to the election has already begun . 選舉已開始進(jìn)入倒計(jì)時(shí)階段。 返回 countdown