The sun ( or tanning booth ) damages your epidermis , the outermost layer of your skin .
太阳光（或人工日光浴）会损害你的表皮，也就是你皮肤的最外层。
Cuticle is a waxy substance laid down on the leaf surface as it develops , so looking at leaf cuticle is essentially the same as looking at a leaf 's outermost cells - the epidermis .
