However , science is not established by public opinion polls but rather by consistency and explanatory ability 然而,科学不是民意而是靠一致性和解释能力所确立。
The dissertation uses the model explain three case which collected by author , the result of case study imply the model have explanatory ability 从三个实地调查的案例来看,可以利用这个分析框架对村集体出租农地的行为进行有效的解释。