atrophy

More exercises can avoid atrophy of cartilage.

多加锻炼可以避免软骨萎缩。

If you don't exercise your muscles, they weaken and atrophy.

如果不锻炼你的肌肉，肌力就削弱和萎缩了。

Some areas of the brain, if not stimulated, will atrophy and die.

大脑的某些区域如果没有受到促进就会萎缩更甚死亡。