Even those automakers who are most bullish on alternative energy say that the IC engine will remain their primary propulsion system for decades.

即使那些最看好替代能源发展前景的汽车制造商也表示，内燃发动机在几十年内仍将是他们最主要的推进系统。

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Let us know what you think and tell us what alternative search engine is your favorite.

让我们知道你的想法，告诉我们你在搜索引擎方面有没有什么偏好。

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You might wonder why they are competing with themselves, providing a cheaper alternative to their own product. We talked to Engine Yard's founder and architect Jayson Vantuyl to find out.

你可能会疑惑，为什么他们会和自己竞争，给他们的产品提供了一个更为便宜的选择。

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The Chinese middle class has proved to be an alternative growth engine for Western companies, especially when their home markets stagnate during the recession.

FORBES: Times Have Changed: No More 'China Produces and America Consumes'

He says the tension it relieves by allowing pilots an opt-out of flying in poor conditions makes it a safe alternative to other single-engine planes.

FORBES: The Flying Car Comes To The New York Auto Show

China's longer-term opportunity is to build an auto industry based not on the gasoline engine but on alternative fuels, skipping a generation of technology as it has done in areas such as telecoms.

FORBES: Magazine Article