实际上，向量场，还是垂直于水平线，就像之前看到的那样，我只是想提醒一下大家。

Actually, they have a vector field is still pointing perpendicular to the level curves that we have seen, just to remind you.

youdao

不过，因为当今快节奏的生活方式，很多情况下我们更功利一些——我指的是‘钱’，不过我得友情提醒一下，钱只是手段，而不是目的！

But, because of the fast pace of life nowadays, we are bit more utilitarian or money-oriented. By my friendly reminder, money is just one of the means, not the purpose.

youdao

我只是想提醒你正视一下这现实。

I'll just ask you to look at these circumstances.

youdao

Any genuinely new trend is a knight's move. I just remind you, in chess the knight doesn't move in a straight line.

所以，任何新趋势都是迂回前进，我只是提醒大家一下，在国际象棋中马是不走直线的。

耶鲁公开课 - 1945年后的美国小说课程节选