Lactones
(lactone 的复数) n.[化] 内酯
🗣️ 情景例句
Hello, how are you doing today?
你好， 今天怎么样？
Quite so.
的确是这样。
The city at one time must have been prosperous, for it enjoyed a high level of civilization.
这座古城肯定一度很繁荣，因为它曾享有高度的文明，