Leucoline
[有化]喹啉, 氮(杂)萘
🗣️ 情景例句
He was ill at ease with people whom he didn't understand.
他和不熟悉的人在一起感到不自在。
Christmas comes but once a year.
佳节良辰，机会难得。
Thank you very much.
非常感谢。