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1. Despite its dropping cost, solar power is still too expensive to mount a serious challenge to grid-supplied electricity - most solar installations power buildings and machines are remote from the grid, or are fostered by government-sponsored programs.
尽管太阳能成本不断下降,但还是太贵,因而不能对电网所供应的电力构成重挑战——多数采用太阳能设施能源的楼房和机器都位于远离电网的地方,或者得到政府资助计划的扶植。
-- 来源 -- 时文4 - P_shiwen_jijiangdaoqingjingji 好评(10) 差评(0)  
 



















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