他当上领导的第一件事就是清除党内的极端分子。

His first act as leader was to purge the party of extremists.

《牛津词典》

顾客遗忘的第一件事就是如何计数。

One of the first things customers forget is how to count.

youdao

我每天第一件事就是要看电子邮件。

I always start the day by going through my email.

《牛津词典》

All right? The first one is, that test has to involve-- shouldn't have to, the value of some variable.

好不好？第一件事是，循环开始的测试必须必须-不是一定，一些变量的值。

麻省理工公开课 - 计算机科学及编程导论课程节选

So, that translation causes people to believe that ; The story is giving me an account of the first event in time forward; But it's actually a bad translation.

因此，这种翻译让人们相信,这个故事将讲述时间存在以来的第一件事;,但事实上这是一个有误的翻译。

耶鲁公开课 - 旧约导论课程节选

So the first thing we're going to do today is look at a different form of competition which is called Bertrand competition.

所以今天我们要做的第一件事,就是来学习一个不同形式的竞争,叫伯川德竞争

耶鲁公开课 - 博弈论课程节选