The fact that an aeroplane is up in the air and cannot stop if anything goes wrong makes it perhaps a matter of life or death that its performance is absolutely dependable.

 
  • 飛機一旦到達空中,如若發(fā)生故障也不可能停下來(lái),所以,飛機的性能要絕對可靠,這也許是個(gè)事關(guān)人們生死的問(wèn)題。
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