| 单词 | frequency |
| 释义 | frequency ˈfrɪ:kwənsɪ n. 频率 【英】n. 频率(rate of occurrence or repetition of sth) 【类】frequency : pitch / wavelength : color (频率决定音高/波长决定颜色) 反义词：rarity(稀有) 【例】Fatal accidents have decreased in frequency over recent years. frequency ˈfri:kwənsɪ n.频率（单位时间内某种完整波动的重复次数）；频繁性 【类】frequency:pitch＝wavelength:color频率决定音高＝波长决定颜色 【反】rarity（n.稀有） |
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