She says another important effort is a bill proposed this year in Congress: the Community Choice Act.

VOA: special.2009.08.15

So similarly, I would find that ?2 2 equals 1 plus B S1 and this is the best response of Player II, as it depends on Player I's choice of effort S1.

同理可得?2等于1+B*S1,?2是参与人II的最佳对策,因为它与参与人I的策略S1有关

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