单词 | sound barrier |
例句 | DEFINITIVE EXAMPLES 权威例句〔the sound barrier〕There is usually a sonic boom when an aircraft breaks the sound barrier.飞机冲破声障时,通常会产生音爆。剑桥高阶〔top〕At top speed, these planes break the sound barrier.这些飞机全速飞行时可突破音障。麦克米伦高阶There is usually a sonic boom when an aircraft breaks the sound barrier.当飞机冲破声障时,通常会产生轰声。剑桥国际 |
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