ebb and flow a situation or state in which something increases and decreases in a kind of pattern〔有规律的〕涨落，起伏:•the ebb and flow of the conversation时而热烈时而沉闷的谈话•the ebb and flow of passengers in the station火车站里旅客的时而拥挤时而稀少 ebb and flow a recurrent or rhythmical pattern of coming and going or decline and regrowth 涨落; 兴衰; 消长。 |