diurnal animals are active during the day; diurnal flowers are open during the day and closed at night.
昼行性动物是在白天活动的；白日花是在白天开放、晚上关闭的。
COMPARISON OF THE CIRCADIAN RHYTHMS IN ERG CHARACTERISTIC OF SOME DECAPOD CRUSTACEANS
几种甲壳动物视网膜电图特性的昼夜节律性比较
A diurnal animal hunts its food during daylight.
白天活动的动物在白昼时猎食。
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。
A diurnal animal hunts its food during daylight; while a nocturnal animal hunt s at night
昼间活动的动物在白天猎捕食物,而昼伏夜出的动物在晚间猎捕食物
Diurnal time budget and activity rhythm of Alligator sinensis in the rutting season
扬子鳄发情期昼间行为时间分配及活动节律
Circadian rhythms and diurnal time allocation in Drosophila melanogaster adults.
黑腹果蝇昼夜活动节律及行为时间分配
Diurnal behaviors time budgets and activity rhythms of Gazella subgutturosa in winter
冬季鹅喉羚昼间行为时间分配及活动节律
DIEL HORIZONTAL MIGRATION OF CRUSTACEAN ZOOPLANKTON BETWEEN THE MACROPHYTES AND OPEN WATER IN LAKE XUANWU
玄武湖挺水植物区与敞水区浮游甲壳动物昼夜水平迁移初探
Vertical Distribution and Diel Vertical Migration of Microcrustaceans in Qiandao Lake
浙江千岛湖浮游甲壳动物垂直分布及昼夜垂直移动
The Effects of High-salt Diet on the Circadian Ryhthm of Na~+, ET-1, and NO in Rats
高钠饮食对内皮源性血管活性物质昼夜节律的影响
For example, small diurnal rodents eat berries, nuts, leaves, fruit, seeds, and insects.
例如，昼出的小啮齿动物采食浆果、坚果、树叶、果实、种子以及昆虫。
Cognitive regulation of space distance about drivers to genial tone obstacles in daytime dynamic environment
驾驶员昼间动态环境暖色调障碍物空间距离判识规律
Diurnal Behavioral Time Budget and Activity Rhythm of Reevese?s Butterfly Lizard under Artificial Breeding Condition
人工饲养条件下蜡皮蜥昼间行为时间分配及活动节律
Diurnal Dynamics of CO_2 Released from Bole Surface of Four Street Tree Species in Subtropical Region of China
亚热带4种行道树树干表面CO_2释放速率昼夜动态
Daylight robberies were of frequent occurrence.
白昼行窃已司空见惯了。
The fugitives travelled by night andrested by day.
逃亡者夜行而昼伏.
sexual activity between a person and an animal.
人与动物发生性行为。