call on

US /kɔːl ɑːn/

UK /kɔːl ɑːn/

请, 呼吁

to ask someone in a formal way to do something

•

The teacher decided to call on a student to answer the question.

老师决定请一位学生回答问题。

•

The president will call on the nation to unite during this crisis.

总统将呼吁全国在此危机期间团结起来。

拜访, 看望

to pay a brief visit to someone

•

I decided to call on my grandmother after work.

我决定下班后拜访我的祖母。

•

We should call on our neighbors to see if they need anything.

我们应该拜访我们的邻居，看看他们是否需要什么。