在公共场所大声打电话是不礼貌的。

It is rude to talk loudly on the phone in public places.

youdao

你在大声打电话时，别忘了旁边的人都能听见啊！

Just because you're talking into your phone doesn't mean everyone around you doesn't hear you.

youdao

在美国，5秒钟内就会有很多人喝止其大声打电话。

In America most people would reprimand this man and tell him to shut up within 5 seconds.

youdao