Pervanadic acid
[化] 过钒酸
🧩 词语组成解析
🗣️ 情景例句
Don't ask why; just do as you are told.
别问为什么， 按要求去做就行了。
How much does she eat?
她要吃多少？
She usually wears that round her middle when she goes out.
她外出时总是把它系在腰上。