1 a gap (in/between sth) an empty space in sth or between two things （某物内部或两物之间的）缝隙: The sheep got out through a gap in the fence. 羊打栅栏缝隙钻出去了。

2 a period of time when sth stops, or between two events 间断；（两事中间的）间隙，间断: I returned to teaching after a gap of about five years. 过了差不多五年我又拿起教鞭授课去了。a gap in the conversation 谈话中间的停顿

3 a difference between people or their ideas （人与人或思想与思想之间的）差距，歧异: The gap between the rich and the poor is getting wider. 贫富差别越来越大。

4 a part of sth that is missing 空白: In this exercise you have to fill (in) the gaps in the sentences. 这个练习要做句子填空。I think our new product should fill a gap in the market. 我相信这一项新产品当能填补市场上的空白。