Pentadecalactone
[建] 十五酸内酯
🗣️ 情景例句
If you can't pay the bill, you're going to be in trouble.
你如果不能付账，就要倒霉。
How many pieces are you going to order?
你要订几张？
He told me that he would give up his job.
他告诉我他要辞职。