1. (事件、日期之间的)间隔
    An interval between two events or dates is the period of time between them.

    e.g. The ferry service has restarted after an interval of 12 years...
           时隔12年之后，轮渡服务又重新开通了。
    e.g. There was a long interval of silence.
           中间有很长时间的沉默。

2. 幕间休息;中场休息
    An interval during a film, concert, show, or game is a short break between two of the parts.

    e.g. During the interval, wine was served...
           幕间休息时有葡萄酒供应。
    e.g. England were two goals behind at the interval.
           中场休息时英格兰队落后两球。

3. 音程
    In music, an interval is the difference in pitch between two musical notes.

4. 每隔一段时间;时而
    If something happens at intervals, it happens several times with gaps or pauses in between.

    e.g. She woke him for his medicines at intervals throughout the night.
           她夜里每隔一段时间就叫他起来服药。

5. 以…的间距;每隔…远的距离
    If things are placed at particular intervals, there are spaces of a particular size between them.

    e.g. Several red and white barriers marked the road at intervals of about a mile...
           路上设有几处红白相间的路障，相互间隔约一英里。
    e.g. The trees which gave the road its name stood at regular intervals along the kerb...
           这条道路得名于这些树木，它们沿两边的路缘间隔均匀地排列着。