新的燃煤电厂通常安装昂贵的设备来过滤排放的二氧化硫以遵守法律。

New coal-burning plants usually comply with the law by installing expensive equipment to filter sulfur dioxide from their emissions.

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官员们承认，甚至那些拥有从烟道气中去除二氧化硫设备的发电厂通常也不去费这个神，因为这些处理需要使用电力，因此降低了利润。

Even those plants that have the equipment to remove sulphur dioxide from their flue gas often do not bother, officials concede, because the process USES power and so reduces profits.

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对于那些污染不是很严重的水，也使用类似的设备，只是，玻璃管上涂有二氧化钛。

For less heavily polluted water, similar equipment is used, except that the glass tubes are coated with titanium dioxide.

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