急需!!請help me

waste==adjective;1) In case of Land==that is not or cannot be used; no longer of use; barren;e.g. waste land 荒地==in a town,that not occupied, not used for any purpose.2)useless;thrown away because not wanted; e.g. waste paper; waste products ==unwanted after a manufacturing process.
製造過程剩下的無用的副產品; 廢物。
energy==nooun;1)force,vigour;capacity to do things and get things done;e.g. He has so much energy that he did the work of three men. He's full of energy; 2)(pl.)(person's) powers available for working, or as used in working;e.g. apply(devote) all one's energies to a task; 3)(science) capacity for, power of, doing work; e.g. electrical energy, kinetic energy, potential energy;電能, 動能, 位能; 勢能;
waste energy== energy from waste materials再生能量
或能源。

waste energy : 浪費能源

The consumption habits of modern consumer lifesyles are causing a huge worldwide waste problem. This is having a devastating impact on ecosystems and cultures throughout the world. Some alternative energy companies are developing new ways to recycle waste by generating electricity from landfill waste and pollution.