病态的残忍

例句：

1. 1. The patient's behavior was pathologically aggressive.
   患者的举止病态地具有攻击性。
2. 2. The murder was malignant and deliberate.
   这起谋杀是恶性的且有预谋的。
3. 3. The vicious cycle of poverty is a constant threat to the community.
   贫困的恶性循环对社区构成了持续的威胁。