Preferring to explain behavior in ways that fit science 's methods most easily, scientists have refused to consider any causes for animal behavior other than reflexive and conditioned ones.
由于倾向于用套用科学方法的形式来解释行为，科学家们一直认为，除了反射的和条件外，没有其他原因诱发动物的行为。
The definition of relation, relations properties about to reflexive and irreflexive, symmetric and antisymmetric and transitive, and its application in computer science has been recited.
介绍了关系的定义、关系的自反性和反自反性、对称性和反对称性、传递性五条性质，及其在计算机领域中的应用。
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