ultrasonic
US /ˌʌl.trəˈsɑː.nɪk/
UK /ˌʌl.trəˈsɑː.nɪk/
形容詞
1.
超音波
of or involving sound waves with a frequency above the upper limit of human hearing.
在 Lingoland 學習這個單詞
超音波
of or involving sound waves with a frequency above the upper limit of human hearing.