hyperacoustic

例句：

1. 1. The aircraft istraveling at hypersonic speeds.
   飞机以超音速飞行。
2. 2. Thesound of the explosion wasso loud that it could beheard over the hypersonic noise.
   爆炸声如此响亮，以至于可以听到超音速噪音。
3. 3. The scientists are studyingthe effects of hypersonic travel onhuman health.
   科学家们正在研究超音速旅行对人类健康的影响。