慢性的

例句：

1. 1. The patient has a chronic condition that requires regular monitoring.
   这位患者患有一种慢性疾病，需要定期监测。
2. 2.The disease is chronic and can be difficult to treat.
   这种病是慢性的，治疗起来可能很困难。
3. 3. Chronic pain is often associated with long-term health issues.
   慢性疼痛往往与长期的健康问题有关。