In a country the size of western Europe, we can't be everywhere at the same time, and the hotline allows them to call in no matter where they are and to ask usthe information that we can provide -- even if we're not necessarily able to provide the services directly."

VOA: special.2010.05.03

So they like to be in the membrane and they're stable there and they won't come out because their structure allows them to exist in these unique spaces.

所以它们在膜里稳定存在,而且也不会脱离膜,因为这些蛋白质的结构使其能存在于,磷脂双分子层这个独特的环境中

耶鲁公开课 - 生物医学工程探索课程节选

Putting goods online allows them to reach a greater market,

把产品放在网上可以让他们接触到更大的市场，

不能非法下载 - SpeakingMax英语口语达人

In reality,there is help. Victims of human trafficking can sometimes be granted a special visa that allows them to stay in the U.S.

VOA: standard.2010.05.24

It allows you to define the concept of a thermometer. You have three objects, one of them could be a thermometer.

从热的物体流向冷的物体,由此我们可以定义温度，我们还可以用它来定义温度计：

麻省理工公开课 - 热力学与动力学课程节选

Director Roxana Silbert, "What's great about what we're doing is it allows them to come to it in their own terms and of course the thing that young people find most alienating about Shakespeare is the language, which feels like a different language to them and this isn't in anyway attempting to copy Shakespeare's language - it's written by young people in a language they would use."

VOA: standard.2010.05.07

In other words, all of them are modes of communication with which we function, the intelligibility of which allows us to negotiate the world around us.

也就是说，它们都是我们应用的交流模式，帮助我们理解周围的世界。

耶鲁公开课 - 文学理论导论课程节选

Because positing them allows you explain things about the rotation of the star or the gravitational fluctuations, what have you.

因为这样假定能帮助你解释,诸如星体运行,引力波动,等现象

耶鲁公开课 - 死亡课程节选