Sincosite
磷鈣釩礦
??? 情景例句
I'll say.
是的。
Do you know Mary?
你認識瑪麗嗎？
He built a glass wall through which he could watch what went on inside.
他建造一堵玻璃墻，透過玻璃墻他能夠觀察里面發生的事情。