As we fall asleep the amplitude of brain waves slowly becomes greater.进入睡眠状态时，我们的脑电波振幅慢慢变大。The amplitude of the vibration determines the loudness of the sound.振动幅度的大小决定声音的大小.The foreground for the cooperation between Chi...
As we fall asleep the amplitude of brain waves slowly becomes greater.进入睡眠状态时，我们的脑电波振幅慢慢变大。By their comprehensiveness and amplitude these picture fille the imagination.这些照片以其综合性和丰富而充满了想像力.The foreground for the cooperati...