The difference between bid and ask is the profit for the dealer and the bid-ask spread is the profit for the dealer.

中间商的利润来自出价和要价的差别,差价就是中间商的利润

耶鲁公开课 - 金融市场课程节选

If I can run the gel for some period of time, run the electrical field, spread it out.

我将凝胶通电一段时间后,在电场作用下,就会分散开来

耶鲁公开课 - 生物医学工程探索课程节选

Now, it's going to be captured on tape and that's going to be really bad for my reputation, so spread yourself around other people.

咱们这次是要录像的,那样的话我的名声就毁了,所以尽量分散开来

耶鲁公开课 - 基础物理课程节选

So how are we to account for the diversification of languages, the spread of different ethnic linguistic groups throughout the lands of the earth if we all come from one common creative moment, one common ancestor?

所以，如果我们都起源于同一个时刻，来源于,同一个祖先，那又要怎样解释语言的多样性，怎样解释,使用不同语言的族群遍布地球上的所有土地,这一现象呢？

耶鲁公开课 - 旧约导论课程节选

I want to end this premise idea by talking a little bit about a person for whom, one of the chief purpose in life was to spread happiness-- Mahatma Gandhi. This is a story about him.

我想以介绍一位,一生致力于，传播快乐的人来结论这个前提-,圣雄甘地，这是关于他的一个故事。

哈佛公开课 - 幸福课课程节选

By the way, when we do grading for the class, what we're going to do is to spread the grading around the teaching fellows so that everybody's work is going to get graded evenly by all the teaching fellows.

还有,等到课程评分的时候,我们就会,让几位助教轮流来做,尽可能让每一位助教,都给大家的作业评分

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选