Charles C. retweeted
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绝对是捧杀!不可能超过世界第一强国!
美国军方已成功完成一种可重复使用的高超音速火箭动力飞行器的试飞,这是其半个多世纪以来首次取得此类成就。这标志着五角大楼在追赶中国的战时技术竞赛中取得了进展。buff.ly/9UNBKjz











