These joint undertakings are like, well, you might think of them analogous to playing chamber music with a string quartet.
你可以把这种联合协作想象成一种音乐四重奏。
英语百科
Joint venture
A joint venture (JV) is a business agreement in which the parties agree to develop, for a finite time, a new entity and new assets by contributing equity. They exercise control over the enterprise and consequently share revenues, expenses and assets. There are other types of companies such as JV limited by guarantee, joint ventures limited by guarantee with partners holding shares.