乱伦

HPV includes about 100 different viruses, and they are the leading cause of cervical cancer.

HPV包括约100多种不同的病毒，它们是宫颈癌的主要诱因。

On the other hand, paralleling the three phases of cooperative course, chamber of commerce that uses its advantage of information, means of analogous repeated games and stage of relating games can reduce or wipe out the free rider that emerges in the cooperation course by concerting action. It contributes the process of cooperation favorably. Moreover, it leads to enterprise cooperation and avoids the dilemma.

而对应于合作过程的三个阶段，商会的信息优势、类重复博弈机制和关联博弈平台，使其能通过协调行动来减少甚至消灭企业在合作过程中各个阶段的搭便车行为，从而使企业合作过程得以顺利进行，进而起到规避困境、促进合作的作用。