The examples we've done so far have been pretty straightforward, so we haven't needed to use formal charge to make this kind of decision.

我们之前做过的例题,都是非常简单直接的，因此我们还不需要,用形式电荷来做这种决定。

麻省理工公开课 - 化学原理课程节选

Because most of the people there didn't really need it because they have cars, or they just take taxis.

因为那里的大多数人并不真正需要它，因为他们自己有车，或者会直接打车。

上东区的氛围 - SpeakingMax英语口语达人

And so I joked, badly, I'll agree, at the end of last lecture, that we can just stop now, go straight to the final exam, because this is all you need to know.

所以我在上次演讲快结束时说了个拙劣的笑话，我会同意我们可以到此为止,直接进行期末考试，因为这些是你们需要知道的所有内容。

麻省理工公开课 - 计算机科学及编程导论课程节选

If we want to know the total heat added to the system, we can measure it, which is the straightforward thing, but sometimes you want to calculate in advance, or sometimes you want to calculate it on an exam.

如果想知道给系统的总热量，我们可以测量，这是很直接的事情，但有时候我们想事先计算它，或者需要在考试中计算。

麻省理工公开课 - 热力学与动力学课程节选

It's very expensive when you take into account not only the direct costs, but also the costs that you pay advisors to help you make these decisions.

非常昂贵,不仅需要考虑直接成本,还要考虑,支付给帮你做决策的顾问们的费用

耶鲁公开课 - 金融市场课程节选

Now he's asking this question and the disease model response to this is we need to help them deal directly with depression, with their anxiety and with their unhappiness whether it's violence,whether it's unhappiness.

他问了这个问题，根据疾病模型,我们需要帮助他们直接,处理抑郁症，还有他们的焦虑和忧愁,无论是暴力还是不快乐。

哈佛公开课 - 幸福课课程节选

Your problem is to only look at the forces of contact on you, and that is just this f.

你只需要注意那些直接作用在这个物体上的力,那就只有 f 了

耶鲁公开课 - 基础物理课程节选

It took me seven comparisons, because I can take advantage of the fact I know I only ever have to look at the first element of each sub-list. Those are the only things I need to compare, and when I run out of one list, I just add the rest of the list in.

进行了7次对比，因为我可以利用我知道的优势：,每次只需要比较每个子列表的第一个元素,那才是我需要进行对比的内容,当一个列表的元素处理完了,只需要将另一个列表剩下的元素直接添加进去。

麻省理工公开课 - 计算机科学及编程导论课程节选