Dithioacetals
二硫縮醛
??? 情景例句
Please don't do it without asking.
未經允許請不要那么做。
There's something wrong with the phone.
電話出了點兒毛病。
I'll keep the things on this shelf for you, said the shopkeeper.
“我先把你的東西放在這個貨架上，”售貨員說。