The frequency of an event is the number of times it happens during a particular period. 频率
noun [具体名词] 出现次数；频繁；频率
You can't hear waves of such a high frequency. 你听不到这么高频率的声波。
- frequency 出现在下面的课文中（提供视频、音频及笔记等可系统性学习）
- Lesson 49 The ideal servant
- Lesson 43 Are there strangers in space?
来自frequent(a. 频繁的)
- 网友用 “Frequency” 造句精选
- 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。
- The frequency of Kara's phone calls increased rapidly. 卡拉打电话的频率迅速增加。
- ...a frequency of 24 kilohertz. …24千赫的频率。