小学生们正在为游泳课做准备活动，看到他们的小脸上满是专注的表情时，我笑了。

School children were warming up for a swimming lesson and I smiled as they exercised with their little faces all screwed up in concentration.

youdao

游泳之前做准备活动。

I do warm up exercises.

youdao

游泳之前做准备活动。

I do warm up exercises.

youdao