backup power短语⁵⁵⁸²⁴ 基本例句 预备电力 Yet the need for reliable backup power will grow as states require utilities to use more renewable energy and the cost of carbon- based power rises in the face of expected climate regulations. 然而国家已经要求事业单位使用更多可再生能源，并且在将来气候变化条约的约束下，碳能源的成本也会水涨船高，因此对于可信赖的内用能源的需求将有增无减。 yeeyan