Biorhythm is one of the most common phenomena in nature 生物节律是自然界普遍存在的一种生命现象。
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Disturbance of biorhythm , especially circadian rhythm , will cause malaise and even disease 生物节律尤其是昼夜节律的改变，紊乱，将导致机体功能紊乱，严重时将引起疾病。
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Biorhythm a periodic physiological or behavioral change that is controlled by a biological clock . circadian rhythms are an example 生物节律：由生物钟控制的周期性的生理上的或行为上的变化。昼夜节律就是一个很好的例子。
