frequency/ˈfriːkwənsɪ/
n.-cies1. 屡次；频繁the frequency of earthquakes频繁的地震
The frequency of accidents on that road made the council lower the speed limit.那条道路交通事故频繁，为此市议会决定降低那里的车速限制。
2. 频率a frequency of 14.5MHz 14.5兆赫的频率
This radio signal has a frequency of 800000 cycles per second.这个无线电讯号的频率是每秒八百千周。
3. 周率This radio station broadcasts on three different frequencies.这家电台用三种不同的周率广播。