be left holding the baby idiom UK (US be left holding the bag)
被迫独立撑起局面，不得不承担起（别人丢下的）责任
to suddenly have to deal with a difficult situation because others have decided that they do not want the responsibility
The other investors pulled out of the project and we were left holding the baby. 其他投资者从该项目里撤出后，我们不得不独立撑起局面。