nocturnen.夜曲;夜景画
nockn.(弓两端扣弦的)弧口;(箭的尾端)扣弦处v.在(弓或箭上)做凹凸;把(箭)搭在弓弦上
nocturnally在夜里,每夜
nocturnalityn.夜间活动(性);夜间活动的习惯
nocturnalism夜活动
nocturnal arc地平下弧,夜弧光
nocturnal eye夜眼(动)
nocturnal fishn.夜行性鱼类
"nocturnal animals are active at night"
"nocturnal plants have flowers that open at night and close by day"
"nocturnal darkness"