Studies on the Progressive Movement in U. S. were divided into specific study, general study and comparative study by their method of study.

从研究方法的角度看，国外主要是美国学界关于进步运动的研究大体可分为专题研究、综合研究与比较研究。

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Studies on the Progressive Movement in U. S. were divided into specific study, general study and comparative study by their method of study.

从研究方法的角度看，国外主要是美国学界关于进步运动的研究大体可分为专题研究、综合研究与比较研究。

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