水泥工业是大量消耗电能的产业部门之一。
Cement industry is one of the industries which consume power most.
就算它们未被使用，它们依然能在插线的情况下消耗电能。
even when not in use they can be an "energy sink" just by being plugged in.
而即使你没有充电，插在插座上的手机充电器也在消耗电能。
Cell phone chargers can also waste electricity even when you are not charging your phone.
而即使你没有充电，插在插座上的手机充电器也在消耗电能。
Cell phone chargers can also waste electricity even when you are not charging your phone.
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