interval/ˈɪntəv(ə)l/
n.1. 间歇时间There was a long interval before he anwsered the telephone.隔了好久他才回了电话。
There is a two hours' interval to the next train.下一班火车还要过两小时。
2. 幕间休息In between parts of a play, there is often a interval.在一出剧的两部分中间，常有幕间休息。
3. 〈音〉音程