So I need everybody to be clear - we will protect your identities and your security as you vigorously pursue your missions."

VOA: standard.2009.04.20

Occasionally, you'll find you need to cancel out units, because, of course, you're always doing unit analysis as you solve your problems, and sometimes you'll need to convert joules to kilogram meters square per second squared.

偶然地，你会发现需要消除单位，因为在解题时,经常要做单位分析，所以有时候需要把,焦耳换做,一千克乘以米的平方除以秒的平方。

麻省理工公开课 - 化学原理课程节选

Just as you are making decisions about your life, where you need to go and what needs to happen next.

当你正在为自己的人生做决定的时候——你要去哪儿？接下来又会发生什么？

喜欢的书 - SpeakingMax英语口语达人

You need to be able to read that code and understand it as well as write your own.

你需要有能力,像编写,解读并理解那些代码。

麻省理工公开课 - 计算机科学及编程导论课程节选

And in terms of using these equations in solving problems on the exam, and also using these constants, make sure if you think there might be any chance you're going to get any little part of a problem wrong or do a calculation inaccurately, you need to write out every single step of your thinking as you write out these problems.

而当你在考试过程中用这些公式,来解题时，加上运用这些常数，如果你觉得有可能,在某一小问上出错,或者出现计算错误，请务必把你的思路一步一步地都写出来,当你在答题的时候。

麻省理工公开课 - 化学原理课程节选