flag

The explorers planted their national flag at the summit of the mountain.

(Chinese) 探险家们在山顶插上了他们的国旗。

A white flag is globally recognized as a symbol of surrender or truce.

(Chinese) 白旗被全球公认为投降或停战的象征。

The software will flag any suspicious activity in your bank account automatically.

(Chinese) 该软件会自动标记你银行账户中的任何可疑活动。

I tried to flag down a taxi, but they were all occupied during the rainstorm.

(Chinese) 我试着拦下一辆出租车，但在暴雨中它们都客满了。