water n.水；海域；雨水；海水v.给...浇水；给...供水；加水稀释；充满眼泪；给...水喝
双语例句
1. Also, you can think of it like water poloball. If you take a water polo ball in the water, put your hand on it and press it down, you get pressure up against it that come up.
你也可以想象成一只水球，如果你拿个水球放在水中，把手放球上向下压，你就会得到上升的反作用力。
youdao
2. Also, you can think of it like water poloball. If you take a water polo ball in the water, put your hand on it and press it down, you get pressure up against it that come up.
