Diacetylhydrazine
[化] 二乙酰基肼
🗣️ 情景例句
We're having a good time, and they're in good hands.
我们玩得痛快，他们也得到很好的照顾。
What is the total circulation of this weekly magazine.
这家周刊总发行量多少？
He was the man who climbed the Leaning Tower of Pisa and dropped various weights from the top,
他就是那个曾经爬上比萨斜塔，从塔顶向下抛掷各种重物的人；