作为太阳能电池基础材料的纯硅，是昂贵的，因而这诱使其使用减少。
Purified silicon, the basic material of such cells, is expensive. The temptation, therefore, is to use less of it.
研究人员指出，以此机制为基础的太阳能电池的效率将取决于电极材料的使用。
The efficiency of such a solar cell would depend on the materials used for the electrode, according to the researchers.
没有任何像电池充电站这种形式的基础设施以支持纯电动力模式。
There is no infrastructure, in the form of battery-charging stations, to support pure electric models.
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