Pyrindol
吡咯并[1,2-a]吡啶
??? 情景例句
Maybe I could borrow some money from you and Dad.
也許你和爸爸可以借我一點錢。
Don't you think it's too formal?
你不覺得太正式了嗎？
He lacks courage.
他缺乏勇氣。