natural cycle

The annual wildebeest migration at the Masai Mara is a natural cycle that replenishes and renews the grasslands of East Africa.

每年马赛马拉的角马大迁徙是一种自然循环，东非大草原因此能够休养生息。

Water on the earth is in constant motion between the great natural cycle and small social cycle.

地球上的水处于自然大循环和社会小循环交织成的往复循环运动之中。

Three night shifts in a row had little impact on the body's master clock in the brain, researchers found, but it played havoc with gut function, throwing the natural cycle out by a full 12 hours.

研究人员发现，连续三个夜班对大脑中的身体主时钟没有多少影响，但它对肠胃功能造成了巨大破坏，让有关的自然周期出现了整整12小时的偏差。

Human biological rhythms are related to the natural cycle of day and night.

人的生物节奏与昼夜的自然循环有关.

Effect of electro-acupuncture treatment on the patients undergoing the natural cycle of frozen embryo transfer

电针干预对自然周期冻融胚胎移植的影响