Photoautoxidation
光能自動氧化
??? 情景例句
Long time no see.
好久不見。
He who has not tasted bitter knows not what sweet is.
不吃苦中苦，哪知甜中甜。
A woman in jeans stood at the window of an expensive shop.
一位穿著牛仔褲的婦女站在一家高檔商店的櫥窗前。