Psychopaths are a necessary evil的意思|示意
                        
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                      精神变态者是必要之恶
Psychopaths are a necessary evil的网络常见释义
不可避免的灾祸 精神病患者是不可避免的灾祸(Psychopaths are a necessary evil) 遗传性遗腺病是黑死病的遗产(Cystic fibrosis is a legacy of the Black Death)