Some Britons have been using cheaper off-peak power since the late 1970s, when "Economy 7" tariffs were created to encourage overnight demand for juice from nuclear power stations.
一些英国人自二十世纪七十年代晚期就开始错开高峰期使用低价电力，当时建立！“经济七号”税费的目的就是为鼓励使用来自核电厂的通宵供电。
Some Britons have been using cheaper off-peak power since the late 1970s, when "Economy 7" tariffs were created to encourage overnight demand for juice from nuclear power stations.
一些英国人自二十世纪七十年代晚期就开始错开高峰期使用低价电力，当时建立！“经济七号”税费的目的就是为鼓励使用来自核电厂的通宵供电。
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