time interval for two trains despatching in succession in the same direction

例句：

1. 1.The time interval between the two events is three hours.
   这两个事件之间的时间间隔是三小时。
2. 2.The scientist spent a significant amount of time interval on the experiment.
   这位科学家在实验上花费了大量的时间间隔。
3. 3. The movie had a long time interval between its beginning and its end.
   这部电影开始和结束之间有很长的时间间隔。