ultrascnic scaling

例句：

1. 1. The plane flew at an ultrasonic speed.
   飞机以超音速飞行。
2. 2. Ultrasonic waves can be used to detect defects in materials.
   超声波可以用来检测材料中的缺陷。
3. 3. The sound of the engine is so loud that it's like a supersonic jet.
   发动机的声音太响了，就像超音速喷气机一样。