1815年后，这种古老的生产方式开始让位于那些由无技能或半熟练工人操作机器的工厂。

After 1815 this older form of manufacturing began to give way to factories with machinery tended by unskilled or semiskilled laborers.

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野蜂和本土蜂也叫“无蜜蜂”，因为它们不生产含糖的金黄色糖浆。

Wild and native bees are also known as "non-honey bees" because they don't produce the sugary golden syrup.

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直接为消费者服务的工作和劳动是“无生产力”的。

Labor in direct service to consumers is "unproductive."

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The "parable of the talents" rewards hard work and investment; and it's satisfying because it does that, but it also instills an anxiety about non-productivity.

才能的寓言“奖励努力工作和投资的人;,这很令人满意，但同时它也会造成关于无生产力的忧虑。

耶鲁公开课 - 弥尔顿课程节选