contingent在有的文献里被翻译成或然的、随机的，

若是这样的话，下面一段却不知该如何理解。

Both access and ownership are mechanisms by which an agent's power over surplus is made contingent on her specific investment,even though investment is not directly contractible.

Rajan & Zingales Power in a theory of the firm. Section 3 第一句。

请赐教。