transcription, транскрипция: [ ʌltrəsɒnɪk ]
Ultrasonic sounds have very high frequencies, which human beings cannot hear.
ADJ : usu ADJ n
transcription, транскрипция: [ ʌltrəsɒnɪk ]
Ultrasonic sounds have very high frequencies, which human beings cannot hear.
ADJ : usu ADJ n
Collins COBUILD Advanced Learner's English Dictionary. Английский словарь Коллинз COBUILD для изучающих язык на продвинутом уровне. 2006