a fast one

例句：

1. 1. She was very excitedto hear that she had a fast one.
   她听到自己中奖了，非常兴奋。
2. 2. The car drovequickly through the city streets.
   汽车快速地穿过城市街道。
3. 3. He finishedhis work in a fast one.
   他很快完成了工作。