For example, if you're talking about the chalk--if I throw the chalk, you will have to know where it is and how fast it's moving.

比如说,这支粉笔,如果我扔出这支粉笔,你就像知道它的位置和速度

耶鲁公开课 - 基础物理课程节选

You know, so I going there from where I live at is like downhill. You know. But it's beautiful, you know.

所以，从我住的地方到那里实际上就是下山。不过那里很漂亮。

河滨公园 - SpeakingMax英语口语达人

This is what's called the Bohr radius, and we'll explain - hopefully we'll get to it today where this Bohr radius name comes from, but for now what you need to know is just that it's a constant, just treat it like a constant, and it turns out to be equal to or about 1/2 an angstrom.

它叫做玻尔半径，我们后面会解释,希望我们今天可以讲到,波尔半径这个名称的由来，但现在你们只要记住,它是一个常数，只要把它当做一个常数对待，它等于,或者是1/2埃。

麻省理工公开课 - 化学原理课程节选

whereas here, it's a bit like a grid. You know where everything is.

然而，在这里，道路是规规整整的。你知道每个地方在哪里。

现代化的地方 - SpeakingMax英语口语达人