So they're going to share equally in the profits of this firm, or this joint project, but you're going to supply efforts individually.

总结起来就是两家公司平分利润,但是都要各自为协作项目付出努力

耶鲁公开课 - 博弈论课程节选

There're 2 individuals who're going to supply an input to a joint project.

有两个实体共同完成一个协作项目

耶鲁公开课 - 博弈论课程节选