As soon as I detect with what we'll call a condition if I'm touching the edge I have to essentially spin around 180 degrees and then continue looping.

一旦我检测到这种情况,当我碰到边界时,我需要转180°然后继续这一循环过程。

哈佛公开课 - 计算机科学课程节选

Well, he would love to be fighting at the edge of the Grand Canyon, so that he doesn't have to worry about his right flank, but he's out there in the middle of a field.

如此一来他肯定会喜欢在大峡谷边上战斗,因为那样就不必担心右侧受到攻击,但当他在战场的中央

耶鲁公开课 - 古希腊历史简介课程节选

We make software; we make technology; we're innovative ,but so are they So, what we really have to do is become a lot more productive and we have to make our companies a lot more competitive. Today, I feel we're losing that edge.

我们生产软件；发展工业技术;,我们有创新能力，但他们也有,所以，我们现在必须要做的就是提高生产效率,我们必须提高我国公司的竞争力,现在，我觉得在这方面我们正在丧失竞争优势。

耶鲁公开课 - 金融市场课程节选

Our t = 0, you have him right on top of this edge.

设 t = 0 时他正好在楼顶的边缘

耶鲁公开课 - 基础物理课程节选