头层皮的英文：
top-grain leather
n. 谷物；颗粒；一点儿；纹理；本质
v. 使成粒状
They are similar in grain.
他们气质相似。
Slowly each grain of wood was replaced with grains of minerals.
慢慢地所有的木质都被矿物微粒所取代。
Grain by grain and hen fills her belly
一粒一粒啄米,母鸡填饱肚皮
This gives the sheet of newspaper a grain.
这就使得报纸的纸张带有纹理。
aluminium grain scoop
铝质谷物铲斗
n. 皮革
adj. 皮革的；皮革制成的
v. 用皮革包裹；用皮鞭抽打
leather carrying case
皮手提箱
These shoes are made of quality leather.
这些鞋是用高级皮革制成的。
leather ware sewing machine
皮革制品缝纫机
The soles are made of leather.
鞋底是皮革做的。
They are rubber and leather fetishes.
他们是迷恋橡胶和皮革的恋物癖。