It acquires remarkable effect to preventing pollution flashover.

取得了较为显著的防污闪效果。

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These web pages offer ideas and resources for preventing pollution.

这些网页提供的想法和资源，防止污染。

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Studying the reason of forming Trihalogenated Methane in water supply, this paper presents some methods of preventing pollution and clearing off Trihalosenated Methane.

本文对自来水中三卤代甲烷的形成原因进行了研究，提出了自来水中三卤代甲烷污染的防治途径和三卤代甲烷的几种清除方法。

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Scientists have been puzzling for some time over exactly what combination of factors is preventing the earth getting even warmer - maybe changes in solar activity, ocean currents or emissions of aerosol pollution.

BBC: Flooding in York