Quadrosilan
二苯硅烷
??? 情景例句
It's one of the best schools in the country, Robbie.
這是全國最好的大學之一， Robbie。
I'm serious.
我是說正經的。
He took off the first shoe and threw it on the floor.
他脫下第一只鞋子，把它丟在地板上。