Tetrolic acid
[化] 2-丁炔酸
🧩 词语组成解析
🗣️ 情景例句
He's probably right.
他也许是对的。
Lily is a Sophomore now.
莉莉现在大学二年级。
By the way, before leaving this subject, I would like to add a few comments.
在结束这个问题之前顺便一提，我希望能再提出一些看法。