Pentoic acid
[化] 戊酸
🧩 词语组成解析
🗣️ 情景例句
The times have been very bad.
时机一直很坏。
When poverty comes in at the door, love flies out at the window.
贫穷进门来，爱情飞窗外。
There were hundreds of people there.
许许多多人都去了赛场。