如果你住在一个满是讲英语的人的地区，那么就让学生走出教室吧。

If you live in an area filled with English speakers, get students out of the classroom.

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我们给时钟编了程序，如果河流继续以现在的速度流动的话，那么就让它与原子钟相匹配。

We've programmed it to match an atomic clock if the waterways continue to flow at their present rate.

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那么就让我们以氖原子为例。

So let's take the example of neon.

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So, that is just a quick example for some of you, you might be very familiar with ion channels, others might not know what these are, so I'll just tell you quite briefly that ion channels are these very massive transmembrane proteins.

这对你们中的某些人来说仅仅是个小例子，有些人可能已经非常熟悉离子通道这个概念了，但有些人可能还不清楚，那么就让我来简单地介绍一下离子通道,就是这些巨大的跨膜蛋白。

麻省理工公开课 - 化学原理课程节选

so if somebody wants to spend the money to improve their appearance then so be it .

所以，如果有人要花钱改善自己的形象，那就让他们那么做吧。

整容是个人自由 - SpeakingMax英语口语达人

So let's take the example of neon.

那么就让我们以氖原子为例。

麻省理工公开课 - 化学原理课程节选