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VOA慢速英语:空气制水机获奖150万美元
2018-10-29来源:和谐英语
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renewable – adj. any naturally occurring source of energy, such solar or wind
humidity – n. measurement of how much water is in the air
region – n. particular area in a country or the world
biomass – n. dead plant and animal material suitable for using as fuel
drought – n. a long period when there is little or no rain
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