Carbocation
碳阳离子
🗣️ 情景例句
Who are you rooming with?
你和谁同屋？
Why don't you get dressed now?Put on your work clothes.
为什么你不现在穿好衣服?穿上你的工作服。
I'd like to cash a traveler's check please.
我想兑换旅行支票。