Azacyclopropane
[化] 环乙亚胺
🗣️ 情景例句
I happen to have
我这儿碰巧有一项
It is not polite to eavesdrop on the conversation of other people.
偷听他人说话是很不礼貌的。
How's your English coming along?
你英语学得怎样了？