Owing to the heterogeneity of labors, the cooperation and complementarities between labors with different level of skill would achieve increasing returns.
由于劳动力的异质性，不同技能劳动力之间的合作和互补可以获得递增收益。
Owing to the heterogeneity of labors, the cooperation and complementarities between labors with different level of skill would achieve increasing returns.
由于劳动力的异质性，不同技能劳动力之间的合作和互补可以获得递增收益。
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