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