倒计时dàojìshí从未来的某一时点往现在计算时间,用来表示距离某一期限还有多少时间(多含有时间越来越少,越来越紧迫的意思){countdown; counting off, in reverse order, of units of time on schedule (to show the urgency of an operation)}: ～牌{countdown billboard}|工程已进入～阶段。{The project has entered the countdown stage.}