Pervanadic acid
[化] 过钒酸
🧩 词语组成解析
🗣️ 情景例句
You remember that day, Robbie?
你还记得那天吗 Robbie
What's the area of the Congo in square miles?
在平方英里内刚果的范围是什么？
It is harvest time, and all the farmers are very busy.
因是收获季节，所有的农民都很忙。