那样做是没用的。

It is no use doing that.

youdao

外面的是他们远无法想象的神奇，但他们做的只是裁减资金和送给她没用的助手。

Out there are wonders they can't even imagine, and all they do is cut funds, and send her useless assistants.

youdao

为要一辆新自行车而哭泣是没用的，你那样做是不会得到的！

It's no use you are weeping for a new bicycle, you won't get one that way!

youdao

So it was a little risky but safe in the end because I didn't do anything else with it.

所以它有点冒险但是最终是安全的,因为我没用它做其它的操作。

哈佛公开课 - 计算机科学课程节选

This isn't gonna work. -Right.

这样做是没用的，-是的。

普林斯顿公开课 - 人性课程节选