Seven states got together and carved up all the water in the river, essentially letting people lay claim to it through a complex system of calling dibs.

七个州联合起来， 将河流中的所有水资源瓜分殆尽，实质一套复杂的优使用权体系， 让以对这些水资源提出所有权要求。

However, this gratuitous part may be inextricably mixed up with the part that he owns, and therefore nobody else can claim that land nor its fruit.

然而， 这一无偿部分可能与他所拥有的部分密不可分，因此无能对那片土地或其果实提出所有权要求。