Heptanedioic acid
[化] 庚二酸
🧩 词语组成解析
🗣️ 情景例句
What are you going to do?
你打算读什么？
No man (or one) is wise at all times.
聪明一世糊涂一时。
Traffic police are sometimes very polite.
交通警有时也很客气。