Perchromic acid
[化] 过铬酸
🧩 词语组成解析
🗣️ 情景例句
I don't think you've got your facts straight.
我认为你没有把事实搞清楚。
No, she isn't.
不，她不是。
At that moment Lucy came into the library.
正在那时候，露茜走进图书馆。