Pyroracemic acid
[化] 丙酮酸\\n[医] 丙酮酸
🧩 词语组成解析
🗣️ 情景例句
It's getting late. Please excuse me, but I must leave right away.
时间不早了。对不起，我得赶紧走了。
What do you know about the tenth century?
有关十世纪的事你知道些什么？
Tramps seem to be the only exception to this general rule.
在这条普遍的规律前面，