一切知识起源于劳动。

All knowledge originates from Labour.

《新英汉大辞典》

普列汉诺夫的“文艺起源于劳动”学说是根据唯物主义原理在前人研究的基础上提出来的。

Plekhanov's theory that art originates from labor was proposed on the basis of materialism.

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一些歌曲起源于日常劳动。

Some songs come form everyday work.

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But rooted in free labor ideology is, among other ideas, this notion of mobility.

但是自由劳动意识体系起源于,在众多观点中,人口流动的概念

耶鲁公开课 - 美国内战与重建课程节选