Definition
A person or thing that is very powerful and influential, or highly successful within a specific field.
有势力人士，要角
As a heavy hitter, she has a significant influence in the industry.
作为一位重量级人物，她在业界具有重大影响力。
The company hired a heavy hitter consultant to boost their market strategy.
公司聘请了一位重量级顾问来提升他们的市场策略。
He is a heavy hitter in debates, always presenting strong arguments.
他在辩论中是位重量级人物，总能提出强有力的论点。