例如，运动员训练时他的肌纤维会受损。

For example, when an athlete trains, her muscle fibers break down.

youdao

清瘦、训练艰苦的女运动员行经可能不那么频繁或根本没有月经。

Lean, hard-training women athletes may menstruate less frequently or not at all.

《柯林斯英汉双解大词典》

他是我训练过的最出色的足球运动员。

He's the best football player I've ever coached.

《牛津词典》

Here, this guy looks like kind of an overweight NFL player who hasn't really gotten ready for the drill.

这个家伙像是一位橄榄球运动员,身体超重并且没有充分训练

耶鲁公开课 - 欧洲文明课程节选

Was it that somebody started to train harder?

运动员们更加努力训练？

哈佛公开课 - 幸福课课程节选