late 15c., from Old French nocturnal "nightly, nocturnal," or directly from Late Latin nocturnalis, from Latin nocturnus "belonging to the night," from nox (genitive noctis) "night," cognate with Old English neaht (see night) + -urnus, suffix forming adjectives of time. Nocturnal emission "involuntary ejaculation during sleep" first recorded 1813.
雙語例句
1. The dormouse is a shy, nocturnal creature.
榛睡鼠是一種在夜間活動的膽小動物。
來自《權威詞典》
2. When there is a full moon, this nocturnal rodent is careful to stay in its burrow.
月圓之夜，這種夜間活動的齧齒類動物會小心地呆在地洞裏不出來。
來自辭典例句
3. Nocturnal animals such as bats and owls only come out at night.
夜行動物,如蝙蝠和貓頭鷹隻在夜裏才出來.
來自辭典例句
4. The usual symptoms are dyspnea, and sometimes paroxysmal nocturnal dyspnea.
其常見症狀是呼吸困難, 有時呈陣發性夜間呼吸困難.
來自辭典例句
5. I wander about the dread nocturnal countryside of this inhuman season.