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（皮膚上的皮脂腺産生的一種油性物質，可使頭發光澤，預防皮膚變乾） 返回 sebum