He is one of the most influential figures in the government. 他是政府中最有影响力的人物之一。

The study looks at the influential role of professional athletes in public life. 这项研究关注职业运动员对公众生活的影响。

very/highly influential a highly influential book 极具影响力的书

be influential in doing sth She was extremely influential in raising people’ s awareness of the disease. 她在提高人们对于疾病的意识方面非常有影响力。