We should make ful use of our time to do useful things.

我们应该充分利用我们的时间去做有用的事。

youdao

We should make full use of our time to do useful things.

我们应当充分利用时间去做有用的事情。

youdao

He never learned to do useful things. This made his father very angry.

他从不学些正经的事，这点让他爸爸非常生气。

youdao

But there's some things that that person can do and they're definitely useful in an organization and can do a lot of stuff.

这样的人才,知道该怎么做事,这公司来说十分重要，他们很能干。

斯坦福公开课 - 扎克伯格谈Facebook创业过程课程节选

OK. All right, let me show you one other tool that I want to use. Which is, I've written that piece of code, I ought to check it. Well, I could just run it, but another useful thing to do is, I'm, especially as I want to debug these things, is to simulate that code.

好，那么，让我给大家讲下,我想用的另外一个工具吧,也就是，我已经写好了这一块代码，我应该去检查检查,那么我可以去运行它,但是特别是当我想要调试代码的时候。

麻省理工公开课 - 计算机科学及编程导论课程节选

The other thing about it is that you could make lots of things that are new but generally you think of engineers as making things that are not just new but they're useful, that they do something that needs to be done, and that they do something that improves life, the quality of life of people.

另一个区别是,科学家会做很多很多新鲜玩意儿,而一般来讲,工程师做的东西不只是新奇,它们还很有用,他们做那些需要做的东西,他们做的东西能够提高,人类的生活水平和生活质量

耶鲁公开课 - 生物医学工程探索课程节选

So far, Mr Blair has managed both to do useful things and to refrain from doing too many foolish ones.

ECONOMIST: The enigma of Tony Blair

You've got the core of the chromosome, and then there are arms which are not essential but do useful things, like making antibiotics.

BBC: Nature's medicine maker decoded

Nevertheless a firm called Powercast, based in Pittsburgh, Pennsylvania, has developed wireless-charging products that can do useful things while still operating at safe power levels.

ECONOMIST: Wireless charging