请在起飞前半小时办理登机手续。

Please check in half an hour prior to departure.

youdao

开球前半小时，一份巴西队名单被分发给了记者。

Half an hour before kick-off, a list of the Brazilian team was given out to journalists.

youdao

所以首先，你通常在学年的前半段写好它。

So, the first thing is, you normally write it during the first half of the academic year.

youdao

We spent the first half of the semester,you might say, trying to get clear about the metaphysical facts.

我们将前半学期花在，试着弄清楚那些形而上学的事实。

耶鲁公开课 - 死亡课程节选

So I moved here about a year... a year and a half ago.

我是大概一年前……一年半前搬到这里的。

来西部的原因 - SpeakingMax英语口语达人

First half of the class, metaphysics; second half of the class, value theory.

前半学期，形而上学;,后半学期，价值理论。

耶鲁公开课 - 死亡课程节选