He says many,if not all, of the top American colleges once had a core curriculum a set of courses required for all students.

VOA: special.2009.10.22

- If someone-- you're-- one of you're predecessor didn't already submit it, do follow the directions at top left which says, add calendar so that we can augment the data set even further.

如果-,除非前任代表没有提交相应信息，一定要遵循左上方的用法说明，添加日历,这样就可以进一步增大数据集。

哈佛公开课 - 计算机科学课程节选

I'd like to go by climbing a birch tree, And climb black branches up a snow-white trunk toward heaven, till the tree could bear no more, But dipped its top and set me down again.

我真想去爬白桦树，沿着雪白的树干，爬上乌黑的树枝，爬向那天心，直到树身再支撑不住，树梢碰着地，把我放下来。

耶鲁公开课 - 现代诗歌课程节选

So if I type "man sleep," this is going to give me the user's manual for a program called sleep, but there's a gotcha and the problem set it makes clear, sleep notice that it says at top left sleep one.

所以如果我键入“man，sleep“，它将,给我一个叫做sleep程序的用户手册，但是这里有个参考信息，它使问题更清晰，请注意它指明在左上角。

哈佛公开课 - 计算机科学课程节选

So here Player I's strategy set, she has two choices top or bottom, represented by the rows, which are hopefully the top row and the bottom row.

这是参与人I的策略集合,她有上下两种选择,用横排来表示,即上下两排

耶鲁公开课 - 博弈论课程节选