Will the motor be powered by a new kind of petroleum product or by hydrogen?
发动机是用一种新的石油产品还是用氢气来驱动？
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。
Unfortunately the batteries also gave off hydrogen gas as a chemical by-product, which diffused into the body.
更糟糕的是这些电池会释放化学反应的副产品氢气，氢气会被身体吸收。
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