noun · relating to the body or corporal experience, often regarding pain or punishment

他为了供孩子上学，受了不少皮肉之苦。

noun · the literal physical tissue of skin and muscle

这道伤口只是伤及皮肉，没有伤到骨头。

noun · surface-level or external rather than internal or deep

这只是一点皮肉之伤，你擦点药水，几天就能好。