The skin biopsies showed increased production of glycosaminoglycan and procollagen -- structural components of the skin -- on the arms that receied the retinol lotion.是什么意思_The skin biopsies showed increased production of glycosaminoglycan and procollagen -- structural components of the skin -- on the arms that receied the retinol lotion.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句