We only have half an hour of homework every day.

我们每天只有半个小时的家庭作业。

youdao

We will have half an hour to visit the spring and take photos.

我们将在这个泉水边停留半小时，赶紧拍照留念。

youdao

But a listen to mama said still have half an hour, really, I'm impatient.

可是一听妈妈说面还要放半个小时，真等的我不耐烦了。

youdao

They each have about a half an hour or 45-minute lessons.

他们每个人都有大概一小时或四十五分钟的课。

和钢琴老师 - SpeakingMax英语口语达人

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

FORBES: Is This Meeting Necessary?

They said he was only going to have half an hour to do it, which is reasonable.

FORBES: With Obama Under Its Belt, Reddit Sets Sights On Mitt Romney, Kim Jong Eun

I've been watching video on my Treo 600 for months now and never minded the small screen size all that much the grander concept here is the convenience of having a couple episodes of Curb Your Enthusiasm in your pocket when you have a half an hour to kill.

ENGADGET: Gear Eye: The Archos Gmini 400