作者说了...- R+ N/ a& |" ^9 O3 |& F
You are a liar & S8 n) r' M w, W! \You claimed to be able to hear a tone that contained absolutely no sound! ) _3 y) H% n: F* I8 J
4 @ H; L4 W0 R2 ZThe highest pitched ultrasonic mosquito ringtone that I can hear is 22.4kHz