He often does sports to keep fit.

他经常运动，保持健康。

" It keeps me fit, " she said.

“它让我保持健康”。

We go there to relax as well as to keep fit.

我们去那儿让自己放松心情以及让自己的身体保持健康。

Taking exercise is only one part of keeping fit.

锻炼只是保持身体健康的一个方面。

I am Simon. I often play football to keep fit.

我是西蒙。我喜欢用踢足球来保持健康。

Some girls are going to exercise more to keep fit.

一些女孩打算多锻炼以保持健康。

That's good. You need to exercise and keep fit.

那太好了。你需要多锻炼，保持健康。

Keep fit, and don't lose your nerve. Do you think you understand?

保持健康，不要失去勇气。你认为你明白了吗？”

" I wanted that identity of someone who keeps fit, " she says.

“我想保持自己的身材，”她说。

Many teenagers find running an excellent way of keeping fit and strong.

许多青少年发现跑步是保持健康和强健的很好的方法。