sound barrier

漢語翻譯

英文解釋：

名詞 sound barrier:

1. the increase in aerodynamic drag as an airplane approaches the speed of sound
   同義詞：sonic barrier

例句：

1. Residents have been complaining of the "boom" which is heard whenever a jet breaks through the sound barrier.
   居民們一直抱怨噴氣式飛機在作超音速飛行時所產生的“音爆。”