英语语法分析

Salt water is more buoyant than fresh water.

盐水比淡水浮力大。

《牛津词典》

They must also keep swimming to keep from sinking, since most have largely or completely lost the swim bladder, the gas-filled sac that helps most other fish remain buoyant.

它们还必须不停地游动以避免下沉，因为大多数鱼基本上或完全失去了鱼鳔，这个充满气体的囊帮助大多数其他鱼保持浮力。

Dispelling researchers' initial doubts, computer models have confirmed that this formation is buoyant enough to rise slowly within the mantle and strong enough to push Africa upward as it rises.

计算机模型消除了研究人员最初的疑虑，证实了这个结构有足够的浮力在地幔内部缓慢上升，并且有足够的力量在它上升的同时推动非洲板块上升。