nocturnal

柯林斯词典

1. ADJ Nocturnal means occurring at night. 夜間發生的
The dog's main duty will be to accompany me on long nocturnal walks. 那衹狗的主要職責將是陪我走長途夜路。
2. ADJ Nocturnal creatures are active mainly at night. 夜間活動的
When there is a full moon, this nocturnal rodent is careful to stay in its burrow. 在有滿月出現的時候，這種夜間出沒的齧齒類動物小心地呆在它的洞裡。