A no-smoking warning
A: Excuse me, sir? I’m afraid this is a no-smoking area.

B: What’s that?

A: I’m sorry, sir. Smoking is not permitted in this area.

B: Oh, sorry. I’ll put it out.

请勿吸烟
A：对不起，先生？这里是无烟区。

B：什么？

A：对不起，先生。这里禁止吸烟。

B：噢，抱歉。我这就把烟熄掉。