Phosphoranyl
正膦基
??? 情景例句
I'm Elsa Tobin. How do you do?
我叫Elsa Tobin ，你好。
What is the way to the airport?
哪一個方向是去飛機場？
Aren't you going to admire my new hat?
你難道不想夸夸我的新帽子嗎？