skin做名词是指1）人或动物的皮、皮肤；2）毛皮，皮革，皮张；3）（装液体用的）皮囊（用整个兽皮制成的）；4）果皮或植物的外皮；5）结于某些液面的薄层，（如煮过牛奶的表面）；6）习语：beauty is only skin deep.事不关己，满不在乎。 做动词是指：1）剥掉（如动物）的皮；2）擦破（如膝盖）的皮。leather是指：1）皮革；2）习语，hell for leather,尽快地........
Skin:the external covering or integument of an animal body, esp. when soft and flexible.leather:The skin of an animal, with the hair removed, prepared for use by tanning or a similar process designed to preserve it against decay and make it pliable or supple when dry.
