... 双喷气发动机飞机twin-jet aircraft 亚音速飞机subsonic aircraft 中程飞机medium-range aircraft ...
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以上来源于: WordNet
Supersonic aircraft will not make all subsonic aircraft obsolete.
超音速飞机不会使所有亚音速飞机都淘汰。
When subsonic aircraft NOX emission over China is doubled, its influence is still relatively small.
即使中国地区亚音速飞机排放的NO_x增加一倍，这个影响仍然比较小。
But it is unlikely that the shape of subsonic aircraft will change radically in the foreseeable future.
但在可预见的未来，亚音速飞机的形状不会发生根本的改变。
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