Hexanedione
[化] 己二酮
🗣️ 情景例句
We'd prefer a credit card, if you have one.
如果你有信用卡，我们较喜欢信用卡。
Who is this ,please?
请问你是哪一位？
Unfortunately you'll have to pay the fine before you check those books out.
在你借书之前你要先付清罚款。