You need a substance and then that substance has to have a property that changes depending on the heat flow, i.e., depending on whether it's sensing that it's the same temperature or different temperature than something else.

你需要某种物质,它的某种性质,随着热量的流动而改变，也就是说,依赖于它是否感觉到它,与其他的物体处于相同的温度。

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There are many nontrivial ancillary challenges too, especially the secondary procedure of actually getting the energy out of the reactor into a useful form, i.e. heat to drive steam-turbines as with all other kinds of thermal power stations, to generate electricity.

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So, take a page from gentlemen like New York Knicks forward Amar'e Stoudemire and the Miami Heat's LeBron James, who wear color with bravado.

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Communication skills just don't seem to be Day's strong point--he took some heat in August when RadioShack used e-mail to inform hundreds of employees they were losing their jobs.

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