| 单词 | the sound barrier |
| 释义 | the sound barrier the ˈsound ˌbarrier noun [S] ► F0 a large increase in the force opposing a moving object as its speed reaches the speed at which sound travels: » There is usually a sonic boom when an aircraft breaks the sound barrier.Thesaurus+: ↑Energy, force and power , ↑Power and intensity |
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