Dddc
[医][=diethylammonium diethyl dithio carbamate]二乙基二硫代氨基甲酸二乙基铵
🗣️ 情景例句
At 4, but I have to leave by 3:00 to get there on time.
四点，不过我三点必须离开，才能准时到那里。
To worry about tomorrow is to be unhappy today.
担心明天，今天就不愉快了。
Yes, we might have to do that.
是呀，恐怕只有这么做了。