Arable land value is composed of its natural quality value and its invisible value.

农用地的价值由农用地的自然质量价值和无形价值构成。

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Therefore, steps used to process foods should be designed to preserve their natural quality.

因此，食品的处理过程应该被设计成保持食物的天然品质。

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Arable land is complicated systems that consist of nature, ecology, society, and its value is composed of its natural quality value and invisible value.

农用地是一个复杂的自然、生态和社会复合体；农用地的价值由农用地的自然质量价值和无形价值构成。

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Allen Hershkowitz with the Natural Resources Defense Council, a private environmental group, says air quality around landfill sites must be carefully checked when oil-contaminated waste is added to normal household trash.

VOA: standard.2010.08.05

With larger, synthetic gem quality diamonds coming into the market, investments in larger, natural, high quality diamond will become more attractive than ever.

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While devoting his career to helping shoppers satisfy their lifestyle needs with high quality natural and organic foods, Mackey has also focused on building a more conscious way of doing business.

FORBES: John Mackey: Why Companies Should Embrace Conscious Capitalism

At a high temperature and pressure, gasification converts coal, or other carbon fuels, into synthesis gas that is either burned in a turbine to produce electricity, as in Summit's case, or turned into other products, like diesel oil, fertilizer and pipeline-quality natural gas.

FORBES: Old King Coal