bridge the gap/gulf/divide (between A and B):
- to reduce or get rid of the differences that exist between two things or groups of people 消除（甲、乙间的）隔阂／鸿沟／分歧
Or:
- to connect two things or to make the difference between them smaller
The president singled out education as a vital tool in bridging the gap between rich and poor.
总统先生首推教育为消除贫富差距的重要途径。
This collection of stories bridges the gap between history and fiction.
这部短篇小说集融合了历史和虚构文学。