Hn2
[化] 氮芥; 二·甲基胺; 二氯乙基·甲基胺
🗣️ 情景例句
He always performs his tasks perfectly.
他总是圆满地完成工作。
Why does only one sock get lost at a time?
为什么袜子只丢了一只呢？
They were not fighting men, and their harp was their passport.
他们不是作战人员，竖琴就是他们的通行证。