Lactone
n. [化] 内酯
🗣️ 情景例句
Need another box?
需要另一个箱子吗？
No, that's all for now. What does it come to?
不用了。这次就这样。
I didn't have a penny the last time I saw you.
上次我见到你时，我连一个铜板也没有。