皮肤论

例句：

1. 1. The skin is the outer layer of the body.
   皮肤是身体的外层。
2. 2. She applied some lotion to her sunburnt skin.
   她给晒伤的皮肤涂了一些乳液。
3. 3.Skin cancer is a type of cancer that starts in the skin.
   皮肤癌是一种起源于皮肤的癌症类型。