Now if you look at the structure of this book, it has sections that say Key Points and Key Terms.

如果你看了整本书的结构,就会看到有个关键点和关键词的部分

耶鲁公开课 - 金融市场课程节选

The blood of the animal, the blood of the sacrifice is the key to the whole ritual.

动物的血，祭品的血是整个仪式中最关键的部分。

耶鲁公开课 - 旧约导论课程节选

OK, so two, that's the crucial part.

好，那么第二步，这是关键的部分。

麻省理工公开课 - 热力学与动力学课程节选

So look at line -- I'll run through some of the essential sections here.

看--我读一下这其中的关键部分。

耶鲁公开课 - 弥尔顿课程节选

The readings are a crucial component of the class.

读书是本课程的一个关键组成部分。

耶鲁公开课 - 死亡课程节选

Focusing on one nutrient is a losing proposition, according to some people, but there are others who say that, nope some nutrients prevail over others and are highly important compared to other things that you might be concerned with.

对一些人而言,只关注一种营养的多寡,就像是一宗亏本买卖,是一叶障目的,但还有其他人说,不对,某些营养比其他营养更关键,而且相比其他,营养更应成为需重点考虑的部分

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

And then there's three parts to the parenthesis after the key word "for."

然后在for关键字后面的括号里,有三个部分“

哈佛公开课 - 计算机科学课程节选

The key part of that is that WHILE loop.

关键的部分是这个while循环。

麻省理工公开课 - 计算机科学及编程导论课程节选