The origin of education serves as the basis in the study of pedagogic theory, in which origin of humankind is the logic starting point.
教育起源是教育理论研究中的基础问题，而人类起源是教育起源研究的逻辑起点。
Origin of humankind is a big difficult problem of science at the present time.
人类起源是当代的一大科学难题。
Origin of humankind is a big difficult problem of science at the present time.
人类起源是当代的一大科学难题。
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