Do you ever think your mobile phone is ringing or vibrating when it's not? That's called "phantom vibration syndrome."
你曾經聽到手機鈴聲響起,或感到手機在振動,事后又發現沒有么?這被稱之為“幻覺振動綜合癥”。
Phantom vibration syndrome isn't really harmful -- in the study of college students, more than 90 percent said they considered phantom vibrations to be "only a little" or "not at all" bothersome.