Lactonic
a. [化]内酯酸的, 无水氢氧酸类的
🗣️ 情景例句
I think the building just needs a good cleaning.
我想那座建筑只需要好好地打扫一下。
No good building without a good foundation.
基础不好，建筑不牢。
You mustn't aim too high.
你不可好高骛远。