Perchromic acid
[化] 过铬酸
🧩 词语组成解析
🗣️ 情景例句
How old are you, anyway?
那……你多大了？
A heavy snow promise a good harvest.
瑞雪兆丰年。
No matter how much you want to bathe, it just isn't safe.
不管你多想在这里游泳（都不要游），这里不安全。