因此，本项研究对了解英语教材的这一重要作用有参考价值。

This study may lend references to understanding the roles of textbooks to reach that end.

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They're making that because you need this protein insulin, it's a hormone, and it's important for sugar metabolism in your body.

它们产生胰岛素蛋白是因为你需要它,胰岛素是一种激素,它在糖代谢中起着非常重要的作用

耶鲁公开课 - 生物医学工程探索课程节选

So this is not even thinking about the other electron shielding, just if we think of the fact, all we need to think about is that the effect of going to a further away n n as we go down the table.

到现在我们甚至还没有考虑,其它电子的屏蔽效果，即使我们要考虑这个因素，我们需要考虑也就是,沿着周期表的某一列往下走，距离会逐渐变远,将起最重要的作用，actually，dominates,这一结果所产生的影响。

麻省理工公开课 - 化学原理课程节选

Again welcome back to Professor Stan Katz Drew Frederick and welcome to Drew Frederick, who is a class of seven, graduating, but who is very instrumental in a class that I want to talk about today, which is called the Just University.

让我们再次欢迎Stan，Katz教授,还要有请，他是七班的毕业生，在一门课上起到了重要的作用,我今天就像谈一下这门课，课程叫做，公正的大学。

普林斯顿公开课 - 人性课程节选