The technique of cold storage of grain is one international recognized way of the science and non pollution storage.

粮食的低温储存是国际公认的科学、无污染储粮方式。

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This process has many advantages such as higher yield, simple procedure, shorter reaction period, non corrosive, non pollution, etc.

该工艺产率高，工艺简，反应时间短，无腐蚀，无污染。

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According to study on non pollution bamboo shoot production, analysis was made on background, basis and technical index for standard formulation.

通过对无公害竹笋生产技术的研究，提出了无公害竹笋标准制订背景、标准制订的依据，以及标准的技术指标；

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But today's problem of non-point source pollution is more difficult to control.

CNN: Polluted rivers stain Portland's image

Nanotech also allows for "green manufacturing"--manufacturing processes that can take place at ordinary temperatures, reducing energy costs, while the use of non-toxic catalysts minimize pollution and bottom-up construction leaves no wasted material behind.

FORBES: Nanotech Vs. The Green Gang

In fact, according to the New York State Biodiversity Research Institute, that man-caused influence comes in fifth behind habitat degradation and loss, non-native invasive species, pollution, and overuse of resources.

FORBES: Got Problems? Blame Global Warming