cuticle

n.表皮

角质层，表皮层；（昆虫）外囊

名词

1、The cuticle is the outer layer of the skin that provides protection.
角质层是皮肤的外层，提供保护作用。
2、The cuticle on the insect's body helps to prevent water loss.
昆虫体表的角质层有助于防止水分流失。