Spherosil
多孔微球硅膠
??? 情景例句
I know. I know. I'm really sorry.
我知道 我知道。真的很抱歉。
By reading we enrich the mind; by conversation we polish it.
讀書可以使我門的思想充實，談話使其更臻完美。
Here it is.
給您。