psychopathist

例句：

1. 1. The patient was diagnosed with a psychopathic personality disorder.
   这名患者被诊断出患有人格障碍。
2. 2.The psychiatrist examined the patient's behavior and concluded that he was suffering from a psychopathic condition.
   精神病医生检查了患者的举止，并得出结论他患有精神病态。
3. 3. The manic-depressive patient had periods of extreme happiness followed by periods of severe depression.
   这位躁郁病患者经历了极度的快乐和严重的抑郁交替期。