Performic acid
[化] 过甲酸
🧩 词语组成解析
🗣️ 情景例句
Maybe soon.
也许很快就会。
If he doesn't help him, I will.
如果他不，我将帮助他。
Since that time, racing drivers have reached speeds over 600 miles an hour.
从那时以来，赛车选手已达到每小时600英里的速度。