但当我用另外一侧胳膊的划臂作为起始的话，在第一次划臂时我会把力量用在身体轴心的旋转上---这样增加了划臂的距离和速度。

When I stroked first with the other arm, I added the power of core-body rotation to that first stroke – increasing the distance and speed of my breakout to the surface.

youdao

我这个月底或许要去墨西哥，这是我第一次出国，希望你来北京的时候我能够见到你，我会把自己更多的照片发给你。

I may go to Mexico by the end of the month, it will be my first time I leave China. I wish I will see you in Beijing, and I will send you more photos of myself.

youdao

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