countdownKK [ˋkaʊntˏdaʊn] /ˈkaʊntˌdaʊn/发音名词1倒数计时、倒数The crowd joined in the countdown to the New Year.群众一起为新年倒数计时。2倒数计时阶段、最后准备期The countdown to the election has already begun.选举的倒数计时阶段已经开始了。3发射倒数、倒数程序航太Engineers halted the countdown ten seconds before liftoff.工程师在升空前十秒中止了发射倒数。用这个字练口说→相关片语count down