sound barrier

英 [saʊnd ˈbæriə(r)]

美 [saʊnd ˈbæriər]

n.  音障; 声障

牛津词典

noun

• 音障；声障
  the point at which an aircraft's speed is the same as the speed of sound, causing reduced control, a very loud noise (called a sonic boom ) and various other effects
  1. to break the sound barrier (= to travel faster than the speed of sound)
     突破音障（即超过音速运行）

柯林斯词典

• 声障;音障;声垒
  If an aircraft breaksthe sound barrier, it reaches a speed that is faster than the speed of sound.

英英释义

noun

• the increase in aerodynamic drag as an airplane approaches the speed of sound
  Synonym:sonic barrier

双语例句