他一半时间在伦敦的办事处，一半时间在巴黎的办事处。

His time is split between the London and Paris offices.

《牛津词典》

不利方面：有一半时间都在下雨。

The downside: It rains half the time.

youdao

我感觉自己像是一半时间骑行在风干机里面。

I feel like I'm riding into a hairdryer half the time. Well, it's time for the real adventure to begin.

youdao

It literally halves the amount of time it takes to solve that problem but we can actually do better.

它能把解决问题时间的缩短一半,但其实我们能做的更好。

哈佛公开课 - 计算机科学课程节选

A mule is not spending 1/2 of its time as a donkey, and 1/2 of its time as a horse, we don't see it flickering back and forth between the two, that's not what we see.

骡子并不是一半的时间是驴，另一半的时间是马，我们不会看到它在两者之间来回变化，这不是我们所看到的情况。

麻省理工公开课 - 化学原理课程节选

If one chord holds twice as long or only half as long, then we have an irregular harmonic change--irregular rate of harmonic change.

如果某一个和弦持续的时间是其他和弦的两倍或者只有一半，这就是不规则的和声改变。

耶鲁公开课 - 聆听音乐课程节选