Retin
[醫]維A（維生素A衍生物類）[詞綴]
??? 情景例句
telephone FAO Schwarz about the new twin baby dolls.
打電話給FAO Schwarz談關于雙胞娃娃玩具的事。
Please give me your frank opinion.
請給我你坦率的意見。
This decline in vigour with the passing of time is called ageing.
生命力隨時間的流失而衰退叫做衰老。