To determine if the bird is purebreeding it should be mated to a white or yellow.
要确定是否是纯种繁殖鸟应该搭配的是白色或黄色。
2
He imagined himself a future monarch of Norway, planned to establish reservations for breeding ethnically pure Norwegians, and said he carried out his crimes out of love for "his people".
Under the endeavors of all staffs and direction of swine experts, the farm successfully bred own brand Senyu swine by purebreeding and purebred selection during over 3 years period.