China can become much more efficient in its use of resources and reduce its pollution by using available technology.

通过利用可获得的技术，中国能够在资源运用和减少污染方面变得更有效率。

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To reduce the pollution of the oil-gas well towards the bottom after its fracturing and decrease the operation costs, the hanger specially used for annulus feeding fracturing was developed.

为了减轻油气井压裂后对地层的污染并降低作业成本，研制了高强度环空压裂专用悬挂器。

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Its main role is to reduce the raw water pollution index, and residual chlorine and other impurities, to reverse osmosis water requirements.

其主要作用是降低原水的污染指数和余氯等其他杂质，达到反渗透的进水要求。

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The Indiana-based utility is investing in the required equipment to reduce its sulfur dioxide, nitrogen oxide and mercury pollution.

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Now, thank you all for coming to the White House today, and for coming together around what I consider to be a historic agreement to help America break its dependence on oil, reduce harmful pollution, and begin the transition to a clean energy economy.

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