Butyrrolactone
[化] 丁内酯
🗣️ 情景例句
I'm twenty-nine.
我二十九岁。
The goods we offered last week are running out, therefore, the offer terminates on 20th July.
上周我们报价的货物现已售完，所以，此报价在7月20日终止。
The time I spent at exercises gradually diminished.
我花在锻炼上的时间逐渐减少，