malignant fever

例句：

1. 1. The patient'scondition worsened after receiving the treatment.
   病人在接受治疗后病情恶化。
2. 2. The cancer cells aremalignant and can spread quickly.
   癌细胞是恶性的，并且可以迅速扩散。
3. 3.The patient was diagnosed with a malignant fever.
   病人被诊断出患有恶性发热。