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单词 diurnal
释义

diurnal

adjective
/daɪˈɜːnl/
/daɪˈɜːrnl/
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  1. (biology) (of animals) active during the day
    • Unlike most other bats, this species is diurnal.
    opposite nocturnal
  2. (astronomy) taking one day
    • the diurnal rotation of the earth
    Topics Timec2
  3. Word Originlate Middle English (as a term in astronomy): from late Latin diurnalis, from Latin diurnus ‘daily’, from dies ‘day’.
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更新时间:2026/6/2 7:58:46