我得等半小时的公共汽车。

I had to wait half an hour for a bus.

《牛津词典》

在半小时的时间里，双方都能避开对方，而不会迷路。

Parties were able to elude each other for the space of half an hour without going beyond the known ground.

youdao

我通常在电视上看半小时的新闻，来了解时事。

I usually watch the news on TV for half an hour to know about what's happening.

youdao

And that half hour meeting, in addition to the intelligence meeting, was always focused on what's the immediate threats to the country.

除了情报会议，那个半小时的会议，通常是集中讨论,国家最急迫面临的威胁。

普林斯顿公开课 - 国际座谈会课程节选

Like in high school, every day I would be in school for like six and half hours.

我在高中的时候，每天都会在学校学习六个半小时。

耶鲁的忙碌生活 - SpeakingMax英语口语达人

.. Let me give you a sense of, in the next half an hour and so, a sense of what you expect in this class.

我再来讲讲，接下来的半小时，我会向你们介绍下这门课的内容。

哈佛公开课 - 幸福课课程节选