Teroxide
三氧化物
🗣️ 情景例句
I call it Family Album, U.S.A.
我称之为美国写真。
It's a beautiful country with many large lakes.
这个国家很美，它有很多湖泊。
Over a year passed before the first attempt was made.
然而一年多过去了才有人出来尝试。