正式计时赛于星期日拉开帷幕。

The official timed race began on Sunday.

上传你的记录至计时赛模式积分榜。

Upload your record to the Time Trial Mode scoreboard.

跑酷不是比赛，而是计时赛：你唯一的竞争对手是时钟。

Parkrun is not a race but a time trial: Your only competitor is the clock.

我相信你也知道航空酒吧用于计时赛和铁人三项自行车为主。

I am sure you are aware aero bars are used primarily on Time Trial and Triathlon bikes.

今天上午11点半还将举行女子场地自行车500米计时赛，中国选手郭爽极有可能夺得该项目金牌。

Chinese cyclist Guo Shuang will try to live up to expectations to win gold in the women's 500m time trial starting at 11:30 am.