According to this definition, one species is distinguished from another by the possibility of matings between individuals from each species to produce fertile offspring.
根据这一定义，区分不同物种的标准是不同物种的个体间相互交配产生可育后代的可能性。
2
In this, humans follow a pattern that is widespread in mammals: male hostility to a female's offspring from previous matings.
在这种情况中，人类遵循哺乳动物中普遍存在的一种模式：雄性敌视雌性与其前配偶所生的子女。
3
An important aspect of his breeding method was the pairing of an outstanding Cock with two outstanding hens and then to pair the offsprings of the initial matings.