波音公司已制造了超过260颗商用与民用卫星,总服役期累积达到2500年。
Boeing has built more than 260 commercial and civil satellites that have achieved a total of 2, 500 years of service.
截至2006年底,中国共拥有147个民用机场。
回答是加速机场建设热潮:计划在未来5年内新建45座民用机场,使全国机场总数在2015年前达到220个以上。
Accelerate the building spree with a plan to add 45 new commercial airports over the next five years, bringing the total across the country to more than 220 by 2015.
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