Definition
A person who, while ostensibly equal in rank to others in a group, possesses slightly more authority or responsibility.
同級中的領導者（實際擁有較大權力或責任）
In the committee, the chairperson is usually the first among equals.
在委員會中，主席通常是同儕中的首席。
Although we are all team members, the project manager is first among equals.
雖然我們都是團隊成員，但專案經理是同儕中的首席。
In a partnership, the managing partner is often seen as first among equals.
在合夥關係中，管理合夥人通常被視為同儕中的首席。