上個月麻省理工學院發表咗一項研究 話喺 2020 年之前 美國陽光充足嘅地區 太陽能電嘅平均價格 會降到 6 仙美金一度 宜家平均一度要 1 毫 5 仙美元
Last month, the Massachusetts Institute of Technology published a study saying that the average price of solar power in sunny areas of the United States would have fallen to 6 cents by 2020, and now it will average 1 dime and 5 cents