The lead author, Alfred Bernard of Belgium's National Fund for Scientific Research, said a possible culprit was the chemical trichloramine, a by-product of the chlorine used to clean public pools.

研究报告的主要撰写者、比利时国家科研基金会的埃尔弗莱德·伯纳德说，罪魁祸首可能是清洁公共浴池所用的氯产生的一种化学物质--三氯胺。

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Undeterred, Lowry, the chemical engineer, experimented with nontoxic ways to clean, while Ryan, the AD guy, focused on marketing.

而两人并没有丧失信心，化学工程师洛瑞使用无毒方法进行清洁实验，而学广告的赖安则专注于市场开发。

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If we could find a cheap way to convert solar energy into storable, transportable chemical fuels available 24/7, we would be well on our way to clean energy for all.

如果我们能有廉价的方法将太阳能转化为可存贮、可运输、7x24小时可用的化学燃料，我们就迈向了人人可用的清洁能源。

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The City of Lincoln Council said a chemical-clean of the water system was taking longer than expected.

BBC: Lincolnshire

The city council said on Saturday that a chemical-clean of the water system was taking longer than the expected 36 hours, and that bottled drinking water and alternative bathing facilities were being provided.

BBC: Lincolnshire

What is becoming clearer with time is that the chemical dispersants typically used in clean-up efforts to break masses of oil up into small droplets does more harm than good.

BBC: Deepwater Horizon: Gulf of Mexico 'deep-cleaned' itself