柯林斯词典sebum /ˈsiːbəm/ 1. N-UNCOUNT Sebum is an oily substance produced by glands in your skin. 皮脂 返回 sebum剑桥词典an oil-like substance produced by the sebaceous glands in the skin that makes hair shiny and prevents skin from becoming dry 皮脂（皮肤上的皮脂腺产生的一种油性物质，可使头发光泽，预防皮肤变干） 返回 sebum