Diethyl pyrocarbonat
[建] 焦碳酸二乙酯
🧩 词语组成解析
a. [化]二乙基的
🗣️ 情景例句
Richard, isn't that too much to ask of your mother?
Richard，那是不是太麻烦你母亲啦？
No,I can't .
不，我不能。
It's a book.
一本书。