n.(名词)

1. 频繁，屡次，不断，频仍，经常发生
2. 频率，频度，周率，次数，出现率，发生率，重复率
3. 【物】频率（无线电信号每秒电波数）
4. 拍频
5. 发病率
6. 振动频率
7. 黑洞频率

• ☆ 直接源自拉丁语的frequentia，意为频率，周率。

repetitionn.重复；反复

1. Accidents on that highway are happening with increasing frequency.
   那条高速公路上车祸发生得越来越频繁。
2. Accidents are happening with increasing frequency.
   事故正在愈加频繁地发生。
3. He wrote to both with tolerable frequency.
   他和他们通信，相当频繁。
4. He varied the transmission frequency.
   他变换了无线电传送的频率。
5. He tuned his radio to the police frequency.
   他把无线电调到警方的频率。
6. The pitch depends on the frequency.
   音调的高低是由频率决定的。
7. We can often correlate age with frequency of illness.
   年龄的大小往往与发病率有关。