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

但不论细节如何，这种“用进废退”的情形显然确凿无疑。

Regardless of the details, though, this would appear to be a clear case of "use it or lose it".

youdao

另外，因为无托步枪退壳口非常接近使用者的面部，当废弹壳跳出时使用者感到非常大的声音、气浪和烟尘。

Additionally, because the ejection port on the bullpup rifle is very close to the user's face, the user would feel greater sound, blast and smoke effects when spent casings eject.

youdao

脑运动有：用进废退、适度用脑、整体开发、身心互动和脑体交替等规律。

The principle of brain movement have: Progress on use and retarding on waste, moderate use integral exploit, physical and mental alternation.

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