rhythm of day and night

• 昼夜节律

rhythm of day and night的用法和样例：

例句

1. Thus Euglena shows a diurnal rhythm in the speed at which it moves to a light source.
   当眼虫被放在强光下时，仍能表现出昼夜节律。
2. It is probable that some suppression of the endogenous corticosteroid diurnal rhythm is caused by long-term corticosteroid usage.
   很可能长期应用皮质类固醇激素引起了某些内源性皮质类固醇昼夜节律的受抑。