Humanity has experienced three historical stages in recognizing the value of ecological environment, we should give new explanation for the conception of productivity.

人类认识自然生态环境价值已历经三个历史阶段，对生产力概念作新的诠释。

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Constant average social productivity of labour is the basis of historical cost measure attribute, constant money value stabilization is the basis of nominal moneytary measure unit.

历史成本会计原则的直接基础有两个，即社会平均劳动生产率不变假设和币值稳定假设。

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But he lived in the low level of productivity, science and technology developed slave society, which determines his agricultural ideas with a certain geographical and historical limitations.

但他生活在生产力水平低下，科学技术不发达的奴隶制社会，这就决定了他的农业思想带有一定的地域和历史的局限性。

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Productivity growth over the past two years has been at very low levels by historical standards even though productivity normally rises at a decent pace during expansions.

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Except for oil, most sensitive commodity prices have risen only slightly after years of decline, the dollar remains strong, real short-term interest rates are near historical norms, and productivity growth has accelerated in recent quarters.

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Unlike managers invested in historical decisions, and legacy assets, employees understand that without productivity their long-term employment is at risk.

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