- [singular, uncountable] countdown (to something)
the action of counting numbers backwards to zero, for example before a spacecraft is launched Topics Spacec2倒数读秒,倒计时(如发射宇宙飞船时) - [singular] countdown (to something)
the period of time just before something important happens 大事临近的时期 the countdown to the wedding 婚礼的临近