secondary villisecondary villus次级: secondary绒毛: fine hair; down; lana; pubes ...次级绒毛干: secondary stem villus初级绒毛: primary villus初级绒毛干: primary stem villus下载手机词典可随时随地查词查翻译关注微信公众号：chachacidian，回复:次级绒毛，即可在微信中查询翻译
