intervals
An interval between two events or dates is the period of time between them.
The process is repeated after a short interval of time.
该程序间隔很短时间就重复一次。
The ferry service has restarted after an interval of 12 years.
轮渡服务在间隔了12年之后重新开始了。
An interval during a concert, show, movie, or game is a short break between two of the parts.
at intervals
If something happens at intervals, it happens several times with gaps or pauses in between.
She woke him for his medicines at intervals throughout the night.
整个晚上她不时叫醒他,让他吃药。
If things are placed at particular intervals, there are spaces of a particular size between them.
Several red and white barriers marked the road at intervals of about a mile.
每隔1英里左右就有一些红白相间的路障来标示道路。