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TOEFL BNC: 25704 COCA: 21711

ultrasonic

adjective
/ˌʌltrəˈsɒnɪk/
/ˌʌltrəˈsɑːnɪk/
[usually before noun]
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  1. (of sounds声音) higher than humans can hear超声的
    • ultrasonic waves超声波
    Oxford Collocations DictionaryUltrasonic is used with these nouns:
    • wave
    See full entry

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