Step three in our Lewis structure rules is to figure out how many electrons we would need in order for every single atom in our molecule to have a full valence shell.

路易斯结构规则的第三步是,找出让分子中每个原子的价壳层,都排满应该需要多少个价电子。

麻省理工公开课 - 化学原理课程节选

because honestly, I don't need every role that comes my way.

因为说实话，不是遇到的每个角色我都需要接。

唱片即将上市 - SpeakingMax英语口语达人

And he said:" But every organization need refreshing. You refresh it as you think you need to do."

但他说每个组织机构都需要更新,所以你要做的,就是进行你认为必要的调整“

普林斯顿公开课 - 国际座谈会课程节选

You don't need to say anything more about the phosphate because they all have the phosphate and every set of these is hooked together in the same way.

不需要再进一步说明磷酸基,因为两种核酸都含有磷酸基,并且以同样的方式相互连接

耶鲁公开课 - 生物医学工程探索课程节选

But of course, as we know and thinking about familiar objects, we don't need to have every single piece of an object, of an identity stay the same to have the same feeling.So-- I think previously I talked about the steering wheel on my car.

但很明显的,根据我们的常识，我们不需要要求,所有的物体，都保持不变,从而得到同一个肉体-,我记得我之前讨论过,我的汽车的方向盘。

耶鲁公开课 - 死亡课程节选

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

But if we could statistically control for every other variable, all I'd need to do is measure the distance from your door to everybody else's door on campus and I could chart out who's going to fall in love with whom on the Yale campus.

如果我们能精确地控制其他可变因素，那么只需要测测距离,你宿舍门到其他宿舍门的距离,我就能够计算出,校园里谁爱上了谁。

耶鲁公开课 - 心理学导论课程节选

Every teacher in the world on the first day of teacher training need to learn about Marva Collins and Pygmalion effect.

每个教师在第一次接受教师培训时,需要了解Marva，Collins和皮格马利翁效应。

哈佛公开课 - 幸福课课程节选

And most of these commands you don't actually need but this little caret symbol means control, so every keyboard these days has a control key so you hold that and hit X for instance to exit the program.

这里大多数命令你们都用不着,这个小插入符意味着控制，每个键盘都有一个控制键,譬如，当你敲入X时，就退出这个程序。

哈佛公开课 - 计算机科学课程节选

So, there's more detail on your syllabus -- a detail of what we'll cover every day, but these are the kind of basic things that were covering, and you don't need to write this down, you'll become familiar with it as the semester goes on.

这在你们的教学大纲上写得更详细-,包括我们每次上课的内容，这些东西都是我们会遇到的最基本的问题，你们现在不需要记，在这个学期中，你们会慢慢熟悉起来。

麻省理工公开课 - 化学原理课程节选