Hydrogen energy is an ideal alternative fuel when petroleum of the earth will be used up in the next century.

当下个世纪地球上石油资源枯竭时，氢能是一种理想的代替燃料。

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Graphite is a good conductor of heat, with high thermal conductivity, is considered an ideal alternative to metal.

石墨是热的良导体，有较高的导热系数，被认为是金属材料的理想替代体。

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Clean combustion technology of CFB is ideal alternative technology for air pollution control of industrial coal-fired boiler.

循环流化床洁净燃烧技术，是燃煤工业锅炉大气污染控制的理想替代技术。

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Cable networks are important because they provide "an ideal alternative infrastructure for the provision of a full range of broad-based services, " notably the Internet, the commission official explained.

CNN: EU: Telcos must spin off cable nets

The best, though still far from ideal, alternative is to use monkeys, who harbour similar, but not identical, viruses.

ECONOMIST: An ounce of prevention . . . | The

And according to Dr. Pelaez, the private-sector alternative is far from ideal.

FORBES: Montevideo: Unprepared