Proton exchange membrane fuel cells use a perfluorosulfonic solid polymer film as electrolyte.

质子交换膜燃料电池采用全氟磺酸固体聚合物膜为电解质。

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Nearly 2 million people a year die prematurely from illness attributable to indoor air pollution due to solid fuel use (2004 data).

每年接近200万人过早死于因使用固体燃料产生的室内空气污染而导致的疾病(2004年数据)。

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Nearly 2 million people die prematurely from illness attributable to indoor air pollution from household solid fuel use.

几乎有200万人因使用家用固体燃料造成的室内空气污染所致疾病而过早死亡。

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While in the field, mothers being surveyed about their use of solid fuel cook stoves could also be asked a few questions about their use of kerosene for lighting.

FORBES: Where There's Smoke, There's Fire: A Call to Action for Better Indoor Air Pollution Research

According to the World Health Organization, solid fuel use causes 1.6 million excess deaths per year globally, especially among women and children, while waterborne disease is one of the leading global killers, ending the lives of over 3 million annually again, many of them young children who lack access to clean and safe water supplies.

FORBES: Without Affordable, Clean Alternatives, South Africa Turns to Coal

Another is to use powerful solar cells to collect sunlight in conjunction with an efficient solid oxide fuel cell.

ENGADGET: Marines eye solar energy to eliminate dependency on fuel generators (video)