I work out regularly to keep fit.

我经常做运动以保持健康。

《牛津词典》

She tries to keep fit by jogging every day.

她每天慢跑以保持健康。

《牛津词典》

I go swimming every day in order to keep fit.

我每天游泳以保持健康。

《牛津词典》

If you just drag them and drag them, and drag them in there, it will keep growing to fill--to fit any such statements.

拖拽填充板块进来,它将越变越大。

哈佛公开课 - 计算机科学课程节选

The woman, who had been on her way to a keep-fit class at the school, went home and contacted police.

BBC: 'Despicable' attack on woman, 82

It's perhaps a desire to emulate the likes of Bordeaux -- as well as a desire to keep fit -- that motivates young Senegalese men to work out on the beaches of Dakar.

CNN: Fighting talk: Why wrestling is booming in Senegal

At a news conference earlier today, United chairman Martin Edwards appeared to suggest Cantona could still play this season for the reserves - in order to keep himself fit.

BBC: 27 January