It is still difficult to develop indicators for many concepts used in social science.
为社会科学领域
许多概念确立一个指标仍
。
It is still difficult to develop indicators for many concepts used in social science.
为社会科学领域许多概念确立一个指标仍。
(figurative) It was the study of history that gave birth to the social sciences.
研究孕育了社会科学。
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