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现在要找到一架不是超音速的大型民用客机很难。
Nowadays it is hard to find a large civil airliner that is not supersonic.
youdao
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现在要找到一架不是超音 速的大型民用客机很难。
Nowadays it is hard to find a large civil airliner that is not supersonic. ;
youdao
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现在要找到一架不是超音 速的大型民用客机很难。
Nowadays it is hard to find a large civil airliner that is not supersonic. ;
youdao