The man set off at three-thirty prompt.

那人在三点半准时出发。

I’ll see you at three-thirty.

我三点三十分时和你会面。

It must be about three thirty.

现在想必是三点三十分左右.

I finish school at three-thirty.

我下午三点半放学。

May I clock off at three thirty today?

我今天三点半下班可以吗？

The clock at the school rings at three-thirty p.m.

在下午3点半学校的时钟响起。

But it's three thirty.Have you been together since last night?

但现在是三点三十；你们从昨晚一直呆在一起？

The lights would be switched off at the main at twenty - three thirty.

到二十三点三十分电门总闸就要关掉.

Northrop Grumman and EADS based their tanker on the Airbus A-Three-Thirty.

诺斯罗普·格鲁门公司和欧洲宇航防务集团在空中客车A330的基础上制造了自己的加油机。