So now, the enzyme is locked up with being built, and the penicillin has effectively killed the bacteria.

所以这是我第一次感受到,我想在单个原子的层面上思考这些分子,所以这时我的专业转到了化学方向。

麻省理工公开课 - 化学原理课程节选

This is the first time I've ever done that before.

这是我第一次这么做。

I'm frustrated 实战 - SpeakingMax英语口语达人

OK, there's the first run, I'm going to take a different list.

好的，这是第一次运行，我要测下另外一个列表。

麻省理工公开课 - 计算机科学及编程导论课程节选

So, as I said, this was first discovered and isolated from the jellyfish.

我说过，这是在水母中第一次,发现并被提取的。

麻省理工公开课 - 化学原理课程节选

What I'd like to do--and this will be the first time I've the clicker thing in the class so let's try out this little quiz and see how it works.

我想要--这是我第一次,在课上使用表决器,所以我们先做个小测试看看效果如何

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

I remember where I was when I first heard about this.

我记得我第一次看这新闻时是在哪里。

耶鲁公开课 - 心理学导论课程节选

And this person looked at me and said, "Well the maid was from Dijon." And another time, somebody's French was very good and I said, "Why is your French so good?"

然后这哥们看着我说,"我们家保姆是第戎的",还有一次,也有个人法语特好我就问,你法语怎么这么好

耶鲁公开课 - 1871年后的法国课程节选

When I first taught this class that was back in 2002, I taught it at a seminar and had eight students.

我第一次开设这门课程，是在2002年，是以讨论会的形式，只有8名学生。

哈佛公开课 - 幸福课课程节选

Also, I liked being serenaded by New Blue, which is a first experience for me.

新蓝女生合唱团,创立于1969年是耶鲁第一个女声无伴奏合唱团,这还是我第一次去听她们演出

耶鲁公开课 - 金融市场课程节选

Because here he was for the first time in-- well, since my wife and I were together-- someone else is getting much more attention than I was, no matter how much I cried.

因为这是妻子和我在一起后-,第一次有人夹在中间-,另一个人比我获得更多的关注，不管我怎么哭。

哈佛公开课 - 幸福课课程节选