在一个圆的世界里，你不能挑边。

You can't choose up sides on a round world.

youdao

标志以山的形状为设计主体，并且倾向于在一个圆内融入，代表诚信如山。

Hill to mark the shape of the main design, and a preference for integration into the inner circle, good faith on behalf of the mountain.

youdao

不是变量，这是在一个圆上。，R，is，not，a，variable。，You，are，on，the，circle。,这个是二重积分，如果你们这么做的话，在圆盘上，如果你们用极坐标的话,就需要用到R和θ

R This one is a double integral. So, if you are doing it, say, on a disk, you would have both R and theta if you're using polar coordinates.

youdao

During this part, when you're doing a quarter of a circle, this is supposed to be a quarter of a circle.

在这部分,当你沿着四分之一圆运动,这就是个一个圆的四分之一

耶鲁公开课 - 基础物理课程节选

In other words, you don't have to be moving actually in a circle to have the acceleration.

也就是说,你不必真的在一个圆上运动以获得相应的加速度

耶鲁公开课 - 基础物理课程节选

Every time you see a square bracket, put a paren in. All right?

每次你看到一个方括弧，你就得在此添加一个圆括弧，明白了吗？

麻省理工公开课 - 计算机科学及编程导论课程节选