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Consumers find it hard to measure how much energy they use, says Jonathan Stearn of Consumer Focus, a customer champion.
ConsumerFocus（译注：其官方网站为www.consumerfocus.org.uk）的专家乔纳森·斯登（JonathanStearn）表示，消费者很难测量他们用了多少能源。
zhèng dàng jiā fú luò shí zài jiě yī gè dào zài jiè shí fù jìn de zhōng shì shēn shàng de dàn yào bāo shí , yī kē zǐ dàn dǎ zhòng le nà shī tǐ 。
