Machines replaced the work of many unskilled workers.

机器替代了许多非熟练工人的劳动。

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But for the couriers - who are largely unskilled workers from China's interior - the work can be low-paying and difficult.

但是，对快递员来说——他们大多是中国内地没有技能的工人——这份工作可能报酬低，很辛苦。

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The researchers found, logically enough, that professionals and graduates were more positive about work than the unskilled and non-graduates.

研究者发现：比起无技能者及非大学毕业生，专业人员和大学毕业生对工作的态度更积极(这点是符合逻辑的)。

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They do other unskilled work around rigs like cleaning up spilled oil, moving pipes to and from trucks and guiding cranes that move loads around decks.

FORBES: Magazine Article

But it also tilted the country towards unskilled sorts of work, where productivity is low.

ECONOMIST: Rigidities in the labour market make recovery even harder

Another problem is that it includes many unskilled workers who work in knowledge industries.

ECONOMIST: Economics