Heterocyclics
雜環族化合物
??? 情景例句
What's your opinion about this?
你的觀點是什么？
Your baking really smells good.
你烘焙的餅干聞上去好香。
The plane was late and detectives were waiting at the airport all morning.
飛機誤點了，偵探們在機場等了整整一上午。