1. 昼夜节律：谈到了两种节律,昼夜节律(circadian)和以年为周期的节律(circannian),主要是前者. 动物活动都有严格的节律性. 节律的确定与生存关系紧密. 比如rodent类容易被捕食,所以选择昼伏夜出(nocturnal),不担心被捕猎的动物则昼出夜伏(diurnal).

2. 生理节奏的：circa 大约大约 | circadian 生理节奏的 | circinate 漩涡状的

3. 近日节律：血压昼夜节律变化:circadian rhythm of blood pressure | 近日节律:circadian | 昼夜节律:circadian

4. 生物钟节奏：气韵:rhythm | 生物钟节奏:circadian | 昼夜节律:circadian rhythms

adj

1. of or relating to biological processes occurring at 24-hour intervals

e.g. circadian rhythms