Silice
二氧化硅
🗣️ 情景例句
The pollution in Beijing is alarming.
北京的污染给人们敲起了警钟。
I'm two years younger than my sister.
我比我姐小两岁。
Let me take a look at your shoulder. Where does it hurt?
让我看看你的肩膀。哪里疼？