ultrasonic
/ˌʌltrəˈsɑːnɪk/
American
- adj. 超音速的
- n. 超声波
- Definition
- adj. faster than the speed of sound
- n. sound waves with a frequency too high for humans to hear
- Example
- The dentist used an ultrasonic tool to clean my teeth.
- 牙医用超声波工具给我清洁牙齿。