You thought about it maybe for a half an hour.

你想了大概半个小时。

耶鲁公开课 - 死亡课程节选

It's about maybe half an hour, one hour from Barbados and maybe another hour and half from Puerto Rico.

从巴巴多斯岛到那儿大概要半小时或一小时；从波多黎各到那儿则需要再花上一个半小时。

和纽约的留学生 - SpeakingMax英语口语达人

I needed about an half hour ahead start on him in the office in order to be sufficiently prepared to visit with him which I did every morning shortly after he arrived.

我需要在他之前,半个小时前就开始工作,为的是做好充分准备,跟他谈话,我每天早上,他到达办公室后都要跟他谈。

普林斯顿公开课 - 国际座谈会课程节选

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