由于没有重力施加于身体上，骨骼和肌肉都会废退。

With no gravity exerting itself on the body, both bones and muscles begin to waste.

youdao

语言学习的根本法则就是“用进废退”。

One fundamental rule of language learning is: "Use it, or lose it. ""

youdao

语言学习的根本法则就是“用进废退”。

One fundamental rule of language learning is: "Use it, or lose it. ""

youdao