“你会有一门很棒的课程，但是如果没有用心的老师上这门课的话，”她说，“这节课教会你的不会如你想象中多。”

"You can have a great curriculum but if you don't have teachers dedicated to teaching it well," she says, "it won't work as well as you want it to."

youdao

如果没有用户通过身份认证，则返回null。

If no user has been authenticated, the method returns null.

youdao

如果没有用户通过身份认证，则返回null。

If no user has been authenticated, it returns null.

youdao

And you just think that's just gone, if that sea decide to take that house, it's gone, you cannot do it.

这时你会想说，这房子肯定会被毁掉的，如果大海要毁掉它，它就会毁掉，做什么都没有用的。

普林斯顿公开课 - 人性课程节选

But if you don't actually do anything with it, -- it simply disappears, and, therefore, it's -- well done, classmate Number Two.

但是如果你的确是没有用它做任何事情，它只不过是看不见的，因此，它是-,做的好，第二号的同学。

哈佛公开课 - 计算机科学课程节选