They require a lot of labor and a lot of fossil fuel.
它们需要许多的劳力和化石燃料。
In other industries computer programmed robots and other forms of data processing equipment perform many of the jobs which used to require a lot of mental labor.
在一些工业部门，计算机程序控制的机器人和其他形式的数据处理设备，完成许多需要大量脑力劳动的工作。
In the future, Russell says, many of today's jobs that require a lot of physical labor will be replaced by machines with artificial intelligence.
罗素表示，在未来，很多如今需要大量体力劳动的岗位将被具有人工智能的机器所替代。
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