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TOEFL BNC: 25704 COCA: 21711
ultrasonic
ʌltrəsɒnɪk ˌʌltrəˈsɒnɪk ˌʌltrəˈsɑnɪk
ADJ [usually ADJ n] 超声波的 Ultrasonic sounds have very high frequencies, which human beings cannot hear. 超声波的
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Trends of ultrasonic
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TOEFL BNC: 25704 COCA: 21711
TOEFL BNC: 25704 COCA: 21711
TOEFL BNC: 25704 COCA: 21711
ultrasonic
Relating to sound: above, acoustic, acoustics...

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