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diurnal

美[daɪ'ɜːrnl] 英[daɪ'ɜːnl]

adj. 每日的；白天的

副词：diurnally

近义词：everyday，day，daytime，daylight，daily，circadian，quotidian，nocturnal，

Adjective

of or belonging to or active during the day;
"diurnal animals are active during the day" "diurnal flowers are open during the day and closed at night" "diurnal and nocturnal offices"
having a daily cycle or occurring every day;
"diurnal rotation of the heavens"

用作形容词(adj.)

Over water the diurnal change in refraction is likely to be small.在水面上，折光的周日变化可能是很小的。
A diurnal animal hunts its food during daylight.白天活动的动物在白昼时猎食。
Unlike most other bats, this species is diurnal.这种蝙蝠与大多数蝙蝠不同，是在日间活动的。

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