promptly

例句：

1. 1.He arrived at the airport promptly at 8:00 a.m.
   他上午8点准时到达机场。
2. 2.She finished her work quickly and left early.
   她迅速完成了工作，并提前离开了。
3. 3.The driver was prompt to arrive on time.
   司机准时到达了。