Definition (合作)
To collaborate with one or more parties to achieve a mutually desired objective.
合作，合力
The two companies decided to join forces in order to gain an advantage in the competitive market.
兩家公司決定聯合起來，以便在競爭激烈的市場中取得優勢。
After realizing they had a common enemy, the rival organizations decided to combine forces.
在意識到他們有共同的敵人後，這些敵對組織決定聯合起來。
The small charities are joining forces to amplify their impact on the community.
這些小型慈善機構正在聯合起來，以擴大他們對社區的影響力。