发射前的倒计时刚开始,控制中心就发现了异常信号。Fāshè qián de dàojìshí gāng kāishǐ, kòngzhì zhōngxīn jiù fāxiàn le yìcháng xìnhào.As soon as the countdown before launch began, the control centre detected an abnormal signal.
新年的倒计时开始了,大家一起大声数起来。Xīnnián de dàojìshí kāishǐ le, dàjiā yìqǐ dàshēng shǔ qǐlái.The New Year countdown has begun, and everyone counts out loud together.
离考试只剩三天,我们进入了复习倒计时。Lí kǎoshì zhǐ shèng sān tiān, wǒmen jìnrù le fùxí dàojìshí.Only three days remain before the exam, and we have entered the review countdown.