希瑟离开家，进入一个玩耍小组，在那里，她第一次见到了来自其他家庭的孩子。

Heather is sent out of her home into a playgroup, where, for the first time, she meets children from other homes.

youdao

人类第一次进入太空是什么时候？

When did humans first go into space?

youdao

他于2000年第一次进入决赛。

He first reached the finals in 2000.

《牛津词典》

All right, so we can go to today's notes, and in terms of the notes, what we're going to start with is finishing material that's going to be relevant for exam 1, and I told you on Wednesday that actually I'd give you some information today in terms of what you need to do to prepare for exam 1.

好，下面我们进入今天的讲义内容，而依照讲义，我们今天首先,要把第一次考试要求的最后一部分内容讲完，而且我周三曾经告诉过大家,我会在今天把一些信息告诉大家,是关于如何准备第一次考试的。

麻省理工公开课 - 化学原理课程节选

In fact, when I first started attending law school, a friend of mine came up to me after the second day of class,

事实上，当我第一次进入法律学校时，第二天下课后一个朋友过来找我，

在上西区 - SpeakingMax英语口语达人

So first time through the loop, the answer is a. Second time it-sorry, as it enters the loop, at the time it enter exits a the answer is a.

当第一次完成循环的时候，答案是a，第二次，对不起，在第一次进入循环的时候,答案就是。

麻省理工公开课 - 计算机科学及编程导论课程节选