单词	life existence
释义	life existence 生命存在
随便看	time-frequency signal time-frequency signal processing time-frequency-space domain processing time-frequency space filter time-frequency spectrogram time-frequency spectrum test time-frequency standard time-frequency synchronization time frequency technology time-frequency to traceable sourcelink time-frequency training sequence time frequency transform time-frequency transform time-frequency transformation Time-frequency two dimensional correlation time-frequeney analysis time front time-frozen timeful timefulness time function time function generator time-function model time functions time function s