gronetBNC¹⁷³⁹⁹⁵⁺² 例句 Chris Gronet, the company’s chief executive, says that with some30 billion square feet of large flat roofs in the United States alone, tubular solar cells could generate150 gigawatts of electricity. 该公司董事长克里斯-格罗内称：单就美国大约300亿平方英尺的大型屋顶平台，管状太阳电池板就能产生150千兆瓦特的电力。 ecocn