Diesel engine being used widely, but the tail gases exhausted from it pollute environment seriously.

目前柴油机应用广泛，但是其排放的尾气严重污染了环境。

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But a great deal of manure and polluted water is drained, which can also pollute environment seriously.

但同时由于猪粪尿过度集中和冲洗水大量增加，也会对周围环境造成严重污染。

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The results show that the process is a clean process of mold and core sand foundry and does not pollute environment.

实验结果表明，该工艺不污染环境，是铸造型芯砂的清洁生产工艺。

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Miss Carson questioned the right of industrial companies to pollute without considering the effects on the environment.

VOA: special.2010.03.14

Event organizers have worked hard to ensure that the games will not pollute the environment.

VOA: special.2010.02.10

Earlier this month the Environment Agency granted an environmental permit stating it would not "significantly" pollute the environment or harm human health.

BBC: Devonport incinerator opponents refused judicial review

If these pollute the environment, what is wrong with making them pay to have it cleaned up?

FORBES: Women on Contraceptive Pill Should Pay $1,500 a Year More Tax

And in Florida, Ocean Boy Farms claims to be able to produce a marine shrimp that does not pollute the environment.

ECONOMIST: Fish farming