crepuscular

crepuscular
[krɪˈpʌskjʊlə, krɛ-]
adjective
  1. of, resembling, or relating to twilight
    (与)黄昏(有关)的;(与)黎明(有关)的
    ■(Zoology)(of an animal) appearing or active in twilight
    (动)(动物)黄昏(或黎明)出现的;黄昏(或黎明)活动的
语源
  1. mid 17th cent.: from Latin crepusculum 'twilight' + -ar
英语宝典
考试词汇表