N-COUNT
重量級人物（或組織）;有影響力的人物（或組織）
If you refer to a person or organization as a heavyweight, you mean that they have a lot of influence, experience, and importance in a particular field, subject, or activity.
例句
He was a political heavyweight.
他是一名政界要人。
...jazz heavyweights.
爵士樂壇的重量級人物