" Well, can't you find something useful to occupy yourself? "

“唉，你就不能给自己找一些有意义的事情做吗？”

These chemicals make plastic very useful to us.

这些化学物质使塑料对我们非常有用。

These tips have been so useful to us!

这些小秘诀对我们来说很实用！

I'd be more useful to the project.

对整个计划会更有利。

He finds the goal useful to give him hope.

他发现这个目标能给他带来希望。

The Web is also useful to find long-lost friends.

网络也可以帮助我们找到失散许久的朋友。

Humans were also useful to dogs.

人类对狗也很有用。

But until recently, eDNA wasn't very useful to us.

但是环境 DNA 直到最近方为我们所用。

They hope the information will be useful to the industry.

他们希望这些信息对养鸡行业有帮助。

First, it's useful to have some practice IELTS exams.

首先，做一些雅思测验练习是很有用的。

" It's always useful to see a new volcano personality."

“喷发总有利于我们看到新的火山特性。”

Marc! What did you find outthat's useful to me? !

Marc! 你觉得说这些对我有什么用? !

It's useful to have smaller notes.

小面额的钞票更有用一些。

But there are some conversational tactics which is useful to highlight.

但是有很多非常有用的谈话技巧大家可以注意一下。

Although it might be useful to think about a delicious-looking cake.

尽管想来一块看起来很美味的蛋糕可能会很有用。

So useful to have him swooping around like an overgrown bat.

他像一只巨型的大蝙蝠到处乱飞，对我们倒是很有帮助。

The ping pong technique can be useful to study for tests.

学习乒乓球技术为考试做准备是有用的。

But there's one more thing that's useful to know.

但还有一点知道会很有用。

Secretly, they were all pleased to have something useful to do again.

私下里，她们都很高兴又有些有用的事情可以做了。

Yes. Now that is useful to think about — it's insect repellent.

是啊。现在想想这个词很有用——它是驱虫剂。