对已经做过的事后悔是没有用的。

It's useless to regret what has been done.

youdao

想袭击这个地方是没有用的。

It's quite useless to think of attacking the place.

youdao

你诱惑我是没有用的！

It is useless for you to tempt me!

youdao

So what we see is, again perfectly reasonable statistical techniques, but not looking at things in the right way.

所以我们这里可以看到，还是很完美很有逻辑的统计学工具，但是他们没有用正确的方式去看待数据。

麻省理工公开课 - 计算机科学及编程导论课程节选

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

and the more recent one doesn't have a whole chapter on any one film, but there are lots of films analyzed.

而更新的一本,并没有用一整章去描写一部电影，但是分析了很多电影。

麻省理工公开课 - 电影哲学课程节选