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来源:雅诚德英语网
Studies show that people use approximately one fifth less energy when they are billed for exactly what they use.
研究表明,当人们按实际使用量付款时,他们使用的能源大约减少了五分之一。
Studies show that people use approximately one fifth less energy when they are billed for exactly what they use.
研究表明,当人们按实际使用量付款时,他们使用的能源大约减少了五分之一。