sonic washing machine

例句：

1. 1. The sonic boom was caused by the jet engine's exhaust.
   喷气发动机的排气造成了声爆。
2. 2. Sonic waves travel at the speed of light.
   声波以光速传播。
3. 3. The sonic boom was heard from all over the city.
   整个城市都能听到声爆。