剑桥词典[ 可数名词：有复数形式的名词 ] the act of counting backwards to zero 倒计时 The countdown to the rocket launch will begin at 9.00 a.m. 火箭发射将于上午9点进入倒计时。 [ 单数名词 ] a short period of time leading to an important event 倒计时阶段 The countdown to the election has already begun . 选举已开始进入倒计时阶段。 返回 countdown