同时由于生产的季节性，雇佣期在逐渐缩短，频繁的流动劳动成了劳动力供给与需求的调节方法。

At the same time, working is limited by season, the tune of employment is gradually shorten, the frequent movement of rural labor force become the adjustable method in supply and demand.

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据估计目前的流动劳动人口在一亿五千人左右，这是总体人口的11.5%，较之十年前已经翻了一番。

The current number of migrant workers is estimated at 150 million, or 11.5 per cent of the population, nearly double that of 10 years ago.

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南非这样对移民现状的忧怨的历史早在种族隔离政策下达之前就开始了，那时候国家通过从周边国家引进流动劳动力到矿厂或农场工作。

South Africa's fraught history with migration goes back long before apartheid, when the country imported migrant labor from surrounding countries to work in mines or on farms.

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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

That a free laborer is a mobile laborer, especially in a society like the United States that had this thing called The West, the limitless apparently to them anyway--boundless West.

自由劳动者是流动的,尤其处在美国这样的社会,有他们所说的广袤的西部,特别对他们来说,无边际的西部

耶鲁公开课 - 美国内战与重建课程节选