pigeon n hole 信箱 ; 接收箱
pigeon n pox 鸽痘
Pigeon n Mask 鸽子面具
pigeon n room 鸽子屋
N Pigeon 街道地址
frozen n pigeon 冻鸽子
The pigeonhole principle states that if more than n pigeons are placed into n pigeonholes, some pigeonhole must contain more than one pigeon.
鸽子洞原理认为,如果有超过n只鸽子要放入n个鸽子洞中,有一些鸽子洞就要装进2个以上的鸽子。
Pigeon pea: cover crop suited to human and animal nutrition, pest and disease control, N fixation and P disponibility.
豌豆是人类和动物的营养物,作为覆盖作物有效控制病虫害,固定氮素。
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