flag

A short break revived their flagging spirits.

短暂的休息让他们逐渐低落的情绪重新振作起来。

She ran into the street to flag down a taxi.

她跑到街上挥手拦出租车。

You can flag a message to remind yourself to reply later.

你可以给邮件加标记，提醒自己稍后回复。

His repeated lateness was a red flag for the manager.

他反复迟到对经理来说是一个警示信号。

She flagged down a taxi in the rain.

她在雨中拦下了一辆出租车。

The team flew the flag for their country at the international competition.

该队在国际比赛中为国争光。