In case of fire, vinyl building products begin to smolder long before they burn, releasing toxic fumes of hydrochloric acid, and thereby threatening building occupants and firefighters.

为了防火，乙烯基建筑产品在燃烧之前很久就开始闷烧，释放有毒盐酸气体，从而威胁住户和消防员。

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They also reduce blood sugar levels, and create the fatty acid butyrate, which may burn fat faster.

它们也减少血糖水平，并且生成可能更快燃烧脂肪的含脂肪的酸的丁酸盐。

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Objective To study the effect of acid burn on rat corneal endothelial damage and its repair.

目的研究大鼠角膜酸烧伤对内皮细胞的损伤和影响内皮修复的因素。

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"In fact, when you burn coal, you emit more acid rain pollution, more air pollution, more smog and more global warming pollution which threatens the entire planet, " said Becker, global warming program director for the Sierra Club.

CNN: Energy debate may soon turn on 'cleaner' coal