在制造方面实现规模经济是有保障的，这是因为预计会卖出3000余架飞机——2443架卖给山姆大叔，其余销往其北约盟国。
Manufacturing scale economies were assured because more than 3, 000 planes were to be sold-2, 443 to Uncle Sam and the rest to his NATO Allies.
能源是经济发展的重要保障，现代经济是建立在煤、石油、天然气、水电和核能等能源基础之上的。人类社会在一定时期使用什么能源取决于当时能够达到的科学技术水平。
Energy is the important guarantee for economic development, and the modern economy is established on the basis of energy, such as coal, oil, natural gas, water, electricity, and nuclear.
能源是经济发展的重要保障，现代经济是建立在煤、石油、天然气、水电和核能等能源基础之上的。人类社会在一定时期使用什么能源取决于当时能够达到的科学技术水平。
Energy is the important guarantee for economic development, and the modern economy is established on the basis of energy, such as coal, oil, natural gas, water, electricity, and nuclear.
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