Heptanedioic acid
[化] 庚二酸
🧩 词语组成解析
🗣️ 情景例句
He did not win, but at least he made the effort.
他虽然没有获胜，但至少已经尽了努力。
To fall down
掉下
Please go over it and see if everything is in order.
请过目一下，看看是否一切妥当。