Language, tool-making, and the regulation of sex are the chief defining features of man in contradistinction to other primates.
语言、工具制作以及性节制乃人别于其他灵长动物界限明确特点。
Language, tool-making, and the regulation of sex are the chief defining features of man in contradistinction to other primates.
语言、工具制作以及性节制乃人别于其他灵长动物界限明确特点。
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