After long years of effort, manufacturers of solar-power cells are at last close to matching the low costs of more conventional power technologies.
经过多年的努力，太阳能电池厂商终于快要把成本降到和传统发电方式相同了。
After long years of effort, manufacturers of solar-power cells are at last close to matching the low costs of more conventional power technologies.
经过多年的努力，太阳能电池厂商终于快要把成本降到和传统发电方式相同了。
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