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.
两家公司决定联合起来，以便在竞争激烈的市场中取得优势。
After realizing they had a common enemy, the rival organizations decided to combine forces.
在意识到他们有共同的敌人后，这些敌对组织决定联合起来。
The small charities are joining forces to amplify their impact on the community.
这些小型慈善机构正在联合起来，以扩大他们对社区的影响力。