But, after decades of dirt-cheap fuels, energy efficiency remains unloved: 10m homes in the UK have unlagged lofts, for example.
但是，对于肮脏又便宜的燃料几十年的使用，能源效率依然未解决。
But, after decades of dirt-cheap fuels, energy efficiency remains unloved: 10m homes in the UK have unlagged lofts, for example.
但是，对于肮脏又便宜的燃料几十年的使用，能源效率依然未解决。
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