vellus
美 ['veləs]
英 ['veləs] 
英汉解释
例句
Vellus hair follicles, sebaceous glands and eccrine glands in the overlying dermis were also noted.
上方真皮层中含有毫毛囊、皮脂腺及汗腺。
She's also developing a thin layer of very fine hair called lanugo, which is normally shed and replaced with vellus hair by week 36.
她还长出了一层细绒毛,补称做胎毛,通常会在36周的时候脱落并被毫毛替代。