By some estimates, as much as 75 percent of the body's energy is used to regulate heat when temperatures peak and only 25 percent to power muscles.

据估计，当温度达到最高时，人体有75%的能量被用来调节体温，而只有25%用来为肌肉提供动力。

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For example, the central combined heat and power plant was probably the best move from an energy performance standpoint and yields direct cost savings over the life of the project.

比如，采用集中供热可能是从能源效益立场和整个项目生命周期角度来看所得出的最佳做法。

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When the wind blows the turbine produces 3.5kW of power, enough to meet nearly all the 100-pupil primary school’s energy needs and to help to heat its outdoor swimming pool to a bath-like temperature.

当海风吹过，发电机就可以产生3.5千瓦电力，彻底解决了全校近100名学生的电力需求，同时也把教室外的游泳池加热到适合沐浴的温度。

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Americans are increasingly relying more on natural gas and renewable energy for heat, power and transportation.

FORBES: Report: Clean Power Is Moving (Gradually) Into Americans' Homes

The logical implication of this cost-benefit calculus is that solar energy should receive considerably less support from environmental advocates than more mundane technologies like combined heat-and-power or district energy.

FORBES: Why Solar Energy Sucks But May Save Us Anyway

The witnesses include experts from the Institution of Engineering and Technology, the UK Energy Research Centre, and the Combined Heat and Power Association.

BBC: Week ahead