ultraharmonic

例句：

1. 1. The ultrasonic waves were so strong that they could be heard from a mile away.
   超声波非常强，可以从一英里外听到。
2. 2. The supersonic jets were cutting through the air at incredible speeds.
   超音速喷气机以惊人的速度穿越空气。
3. 3.The ultraharmonic vibrations of the crystal caused a series of sparks to fly out.
   晶体的超谐振动引发了一连串火花飞出。