influential

这项研究对改变公共政策产生了影响。

The study was ___influential in changing public policy.

迈尔斯·戴维斯是现代爵士乐界一位极具影响力的人物。

Miles Davis was an ___influential figure in modern jazz.

他的父亲是当地政坛一位有影响力的人物。

His father was an ___influential figure in local politics.