Performic acid
[化] 过甲酸
🧩 词语组成解析
🗣️ 情景例句
and the pain is so bad.
疼得很厉害。
He that goes a borrowing,goes a sorrowing.
向人借债是自寻烦恼。
I'll teach you if you like.
要是你愿意学，我来教你。