Retin
[医]维A（维生素A衍生物类）[词缀]
🗣️ 情景例句
No. Please endorse the check at the back.
不会的。请在支票的背面签名。
He looks gay.
他神气活现。
A short time before, great trees had covered the countryside for miles around.
就在不久之前，参天大树还覆盖着方圆数英里的土地。