You actually need to kind of do this and then you can swap these two numbers but it requires 50 percent more memory.

你实际上需要这样做,然后才能交换两个数字,但是它需要多50%的内存。

哈佛公开课 - 计算机科学课程节选

How long do you have to be around a person to see him, to estimate how good a lecturer that person is?

你要看一个人多久，才能评估出他讲课有多好？

耶鲁公开课 - 心理学导论课程节选

What they have to do in order to feed the population, you have to have more land.

要怎么做才能养活这么多的人呢,你得有更多的土地

耶鲁公开课 - 欧洲文明课程节选

Remember, i tried to emphasize how rich you would have to be to undertake the building of the temple, to undertake the construction of one of those beehive tombs.

记住,我试着强调要多富有,才能建造一坐庙宇,才能拥有一座蜂巢墓

耶鲁公开课 - 古希腊历史简介课程节选

We think a lot about weight in this country, but weight is a remarkably carefully controlled parameter of a person, that is, you have to work pretty hard to gain weight or to lose weight.

我们身在一个特别关注体重的国家,然而体重是一个,需要小心地控制地人体指标,这就是说,你必须付出相当多的努力,才能增加或减少体重

耶鲁公开课 - 生物医学工程探索课程节选

If you talk about going in for surgery, t have the exact figure in front of me, but something like a fourth of the people in Canada wait six month or more for surgery.

谈到手术，呃，我这里没有确切数据，ehm，，I，don’,但大约,四分之一的加拿大人,要等六个多月之久,才能手术。

斯坦福公开课 - 经济学课程节选