Instead of exhaust fumes, the fuel-cell car produces soap and water.

燃料电池汽车不排放废气，产生的是脂肪酸盐和水。

《柯林斯英汉双解大词典》

We use a patented evaporative cooling technique whereby water is injected straight into the fuel cell stack, he said.

我们采用一项蒸发冷却专利技术，该技术直接将水注入到燃料电池内部。

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Other Japanese automakers have been working to create fuel cell cars, which produce electricity through a chemical reaction between hydrogen and oxygen, with water the only by-product.

其它日本汽车制造商已经开始着手制造燃料电池汽车，这种汽车通过氧和氢的化学反应来发电，而这种化学反应的副产品只有水。

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By 2020 or so, depending on the progress of fuel cell technology, the last of the island's 9, 500 gasoline cars will be gone and only water-vapor-emitting fuel cell autos will remain, according to Taniguchi's plan.

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The only emissions from the fuel cell itself are water and waste heat, which can be captured and put to use.

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To use that excess electricity (obviously, only excess when the wind is blowing just right, or the Sun shining) to electrolyse water by passing it through a fuel cell and then store the resultant hydrogen.

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