定时

1. 商业中心已划为专门区域；送货车辆只在特定时间才能出入该地区。
   The commercial center has now been zoned off: delivery vans may only enter and leave at specified times.
2. 定时器一种计时器，尤指控制时间间隔并指示间隔结束的那种计时器，如炉子上的计时器
   A timepiece, especially one used for measuring and signaling the end of time intervals, as on a stove.
3. 可以训练动物定时等待喂食。
   Animals can be conditioned to expect food at certain times.
4. 定时吃药，每天三次。
   Take the medicine regularly three times a day.

定的英语翻译：

时的英语翻译：