短語詞組短語leaf epidermis piliferous cell 葉鱗毛embryo skin epidermis stem cell 胚胎皮膚表皮乾細(xì)胞epidermis cell layer 表皮細(xì)胞層onion epidermis cell 洋蔥表皮epidermis cell wall 表皮細(xì)胞壁human epidermis cell culture 表皮細(xì)胞培養(yǎng) 返回 epidermis cell