政府旨在通过有针对性的税收政策来缩小贫富差距。

The government aims to ___narrow the gap between rich and poor through targeted taxation.

国际合作可以缩小国家之间的技术发展差距。

International cooperation can ___narrow the gap in technological development between countries.

随着调查的深入，潜在嫌疑人的名单开始大幅缩减。

As the investigation progressed, the list of potential suspects began to ___narrow significantly.