Lactone
n. [化] 内酯
🗣️ 情景例句
there isn't any work for a retired person my age.
没有我这种年纪的退休老人的工作。
The accident held the train up for an hour.
那事故使火车延误了一个小时。
Then, jumping into the car, he drove off as quickly as he could.
然后跳进车里，以最快的速度把车开走了。