I finished my homework in only half an hour.

我才用了半个钟头就功课写完了。

youdao

They can last for only half an hour or up to a week.

这种头痛的持续时间少则半小时，多则一个星期。

youdao

A woman of fame and influence, Kan had nevertheless been courteous enough to keep me waiting only half an hour to speak to her.

作为一个具有知名度和影响力的女人，羽西相当谦恭，只让我等了半小时就开始访谈。

youdao

"Fridays we are only inside for half an hour to gather together.

VOA: standard.2010.06.25

Soon conversation is flowing as if everyone is old friends, rather than the complete strangers they were only half an hour ago.

BBC: Vive l����volution in Paris

The lapsed Senator is really working those long, NBA-tested legs, partly because he feels good--his kickoff speech went well, close to 100 media types are covering him, and the latest polls put him just a few points behind Gore in New Hampshire--and partly because he has only half an hour before sunset, and he wants to lead us to the banks of the Mississippi before then.

CNN: Bradley's twilight cruise

It helps me and everyone else stay focused when we know we only have half an hour.

FORBES: Is This Meeting Necessary?