Division and specialization are the source of economic growth.
分工与专业化是经济增长的源泉。
Specialization is a product of human societal evolution within the division of occupations.
教师专业化是社会分化与职业分化的产物。
Specialization is a product of human societal evolution within the division of occupations.
教师专业化是社会分化与职业分化的产物。
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