Pyridinium
吡啶(鹽)
?? 擴展釋義
【化】 吡啶┹
??? 情景例句
OK. I'll be back in a few minutes.
好，過幾分鐘我就回來。
Have you been busy with schoolwork?
學校的功課很忙嗎？
You have to be able to check instructions.
你必須會查對說明。你必須會籌劃工作。