使用太阳能发电的整个房子，之前有人做到过吗？
事实上，专家们甚至都还无法确定目前太阳能发电的成本有多大。
In fact, the experts don't even agree on how much solar electricity costs today.
只要国家列车继续运行，太阳能发电的未来在日本这片土地上就十分光明。
As long as the state’s gravy-train keeps running, solar power’s future is bright in the land of the rising sun.
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