Dipiperonalacetone
二亚胡椒基丙酮
🗣️ 情景例句
There are abundant free materials available on the internet.
因特网上有丰富的免费资料提供。
We are in the same boat, we both failed the exam.
我们都一样，考试都没及格。
It's often cold in December, January and February.It snows sometimes.
12月、1月和2月常常很冷，有时还下雪。