Quinolinium compound
[化] 喹啉┹化合物
🧩 词语组成解析
🗣️ 情景例句
I'm really sorry to hear about that.
听到这个消息真让我感到难过。
Do you have a room available?
你们有空房间吗？
Once we get down to the oil, it usually flows to the surface because great pressure,
一旦到达油层，石油就会由于地下巨大的压力流到地面上来，