Heptanedioic acid
[化] 庚二酸
🧩 词语组成解析
🗣️ 情景例句
I wasn't born yesterday.
我又不是三岁的孩子。
You cannot break the contract without any good reason.
如果没有什么正当理由，你们不应撕毁合同。
Are you sure you can come by at nine?
你肯定你九点能来吗？