Nitroolefin
硝基烯烃
🗣️ 情景例句
But Dad is always so busy.
但是爸爸总是那么忙。
A drowning man will catch at a straw.
溺水者见草也要抓；急何能择。
Has he had anything to eat this morning?
他今早吃了什么东西吗？