recurrence type

例句：

1. 1. The patient's condition has shown signs of improvement.
   患者的病情有改善的迹象。
2. 2. The pattern of thedata repeats itself every few cycles.
   数据的模式在几个周期后会重复出现。
3. 3.The recurrence of the disease isa concern for both doctors and patients.
   疾病的复发让医生和患者都感到担忧。