Dipiperonalacetone
二亚胡椒基丙酮
🗣️ 情景例句
The answer leapt out at me.
答案突然在我脑海中闪现出来。
I didn't know whether to send the letter airmail or not.
我不知道是否送航空邮件。
They devise hundreds of competitions which will enable us to win huge sums of money.
他们设计数以百计的竞赛，竞赛中有人可赢得巨额奖金。