单个应用程序可以连接到多个Firebase项目.有关详细信息，请参阅 Firebase文档有关配置多个项目，有关详细信息，尤其是在单个应用程序中访问多个项目.

A single application can connect to multiple Firebase projects. See the Firebase documentation on configuring multiple projects for details, specifically the section on accessing multiple projects in a single app.