frequency
英 [ˈfriːkwənsi] 美 [ˈfriːkwənsi]
n.
(声波或电磁波振动的)频率;频繁;发生率;出现率;重复率
复数： frequencies
例句
Speech is made up of sound waves that vary in frequency and intensity.
语音是由不同频率和强度的声波组成的。
Objects like this turn up at sales with surprising frequency.
这样的东西在拍卖会上出人意料地频繁出现。
Sound waves, light waves, and radio waves have a certain frequency, or number of waves per second.
声波、光波或无线电波等都有特定的频率，或者说是每秒的波数。
