The dog who can easily ignore a car backfire or firecrackers on the Fourth of July, but panics on the training field may have learned a negative association.

• 一条狗能轻易地忽略国庆节那天的车辆起爆和满天烟火，却在训练场上表现惊恐万状，这可能正说明了这种习得性的负面联系。