Copyrine
[化] 2,7-萘啶; 2,7-二氮雜萘
??? 情景例句
I will have a cheeseburger, medium rare,
我要一份起士漢堡，五分熟，
I'll probably have eggs and toast for breakfast.
我可能早餐吃雞蛋和烤面包。
Who do you think you're talking to?
你以為你在跟誰說話？