HSK 5 · noun · Practice

肌肉

jīròu

muscle; brawn

锻炼让他的肌肉更强。

Duànliàn ràng tā de jīròu gèng qiáng.

Exercise has made his muscles stronger.

长时间不运动,肌肉会萎缩。

Zhǎng shíjiān bú yùndòng, jīròu huì wěisuō。

Without exercise for a long time, muscles will atrophy.