Peracidite
过酸性岩
🗣️ 情景例句
Your dad is quite a guy.
你爸爸真不赖。
Don't they believe it's necessary?
他们难道不认为它是必要的吗？
Many strange new means of transport have been developed in our century,
本世纪已研制出许多新奇的交通工具，