| 单词 | solar energy |
| 释义 | solar energyDefinition Electromagnetic energy (solar radiation) transmitted by the sun (approximately one billionth of which reaches the earth) that is the basis of all terrestrial life. It amounts to about 420 trillion kilowatt-hours, and is several thousand times greater than all the energy used by all the people. Solar energy is harnessed by capturing the sun's heat (through solar heaters) or light (through photovoltaic cells). It is estimated that one square kilometer (about 0.4 square miles) of land area receives some 4000 kilowatts (4 megawatts) of solar energy every day enough for the requirements of a medium-sized town. Use 'solar energy' in a SentenceThe solar energy company installed panels on the roof that were supposed to eventually pay for themselves by lowering the family's utility bills. He put panels on his roof so he could substitute using energy from the grid with only solar energy in order to save money. Pam was able to lower her power bills by installing solar energy panels throughout her home, thus harnessing the power of the sun. |
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