Lactonic
a. [化]内酯酸的, 无水氢氧酸类的
🗣️ 情景例句
Not bad.
不错。
Hi, Lucy. I'll take French and Economics.
你好，露西，我想选法语和经济。
The next morning the whole family trooped in to watch the performance.
第二天早晨全家人结队来到起居室看我表演。