In this area, the forest is green and luxuriant, the deep shade covers, the mountain spring flies straight, the river water is limpid and pure, without any pollution.

两岸林木郁郁葱葱，浓荫覆盖，山泉飞流直下，河水清澈纯净，没有受到任何污染。

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Heavy oil magnetization is a new, rather mature, simple and effective burning technology without any pollution.

重油磁化技术是一项新颖、比较成熟、简单有效而无污染的燃烧技术。

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Rare Earth(RE) elements possess integrated effects on modifying, refining and purifying of casting Al alloys without any pollution.

稀土合金具有变质、晶粒细化和净化铝合金的综合功能，而且对周围环境不产生任何污染。

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The plan says that "each party shall maintain a national system for responding promptly and effectively to oil pollution incidents" without requiring any clear details on the number of ships or personnel that would be needed to cope with a spillage.

BBC: Concerns raised over 'useless' Arctic oil spill plan