2 sentences

1. 距离比赛开始已经开始倒计时了。

   jù​lí bǐ​sài kāi​shǐ yǐ​jīng kāi​shǐ dào​jì​shí le.

   The countdown to the start of the match has already begun.

   Source: Dong Chinese Dictionary

2. 广场上的大屏幕正在显示新年倒计时。

   guǎng​chǎng shàng de dà píng​mù zhèng​zài xiǎn​shì xīn​nián dào​jì​shí.

   The big screen in the square is displaying the New Year's countdown.

   Source: Dong Chinese Dictionary