他们看起来可能就像是在踩水和看着甲板。

They may just look like they are treading water and looking up at the deck.

youdao

当你做踩水动作时，你不会从水面之上向水下压水。

While treading water, one does not push down on the water.

youdao

当运动员进行踩水的时候也会有相同的上升力产生。

This same lift force is generated while treading water.

youdao

当运动员进行踩水的时候也会有相同的上升力产生。

This same lift force is generated while treading water.

youdao