Dithione
二硫酮
🗣️ 情景例句
Saving them for today?
留着等今天？
He has been to America.
他去过美国。[曾经有过的经验]
I have always regarded the country as something you look at through a train window, or something you occasional visit during the weekend.
总认为乡村是透过火车车窗看到的那个样了，或偶尔周末去游玩一下景象。