But there are materials that can directly convert heat into electricity without running some working fluid through a traditional generator.

而现在有种材料，无需工作流体通过传统发电机就可以直接将热能转化为电能。

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Heat turns water to steam, steam moves turbines in the electric generator.

热量把水变成蒸汽，蒸汽带动发电机里的涡轮机。

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Bioelectricity is created the same way fossil fuel-generated electricity is: Biomass is usually burned to generate heat, turning water to steam and driving an electrical generator.

生物电能的产生跟化石燃料的产生的电能相同：生物物质经常被焚烧产热，把水变成蒸汽，然后驱动发电机。

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During braking, it becomes a generator, recapturing energy normally lost as frictional heat.

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Heat from the sun boils water to run a steam turbine generator, which delivers power to the grid.

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Their compounds, along with those of wealthier Afghans, constitute the emergent generator-class rich enough to cool (or heat) their offices and homes with big diesel-powered generators.

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