You're absolutely right, I don't want to be involved in this market if the other guy is selling below cost.

你完全正确,我不想参与这市场竞争,如果另外一家公司售价低于成本

耶鲁公开课 - 博弈论课程节选

This is the effort cost. Similarly, player II, everything's symmetric here Player II's payoff is the same thing.

这是她的努力成本,由对称可得,参与人II的收益是一样的

耶鲁公开课 - 博弈论课程节选