英国国家医疗服务体系正面临长期的护理人员短缺。

The NHS is facing a ___chronic shortage of nursing staff.

他多年来一直患有慢性背痛，并尝试了各种治疗方法。

He has suffered from ___chronic back pain for many years and has tried various treatments.

建筑工地持续不断的噪音导致居民长期疲劳和压力巨大。

The constant noise from the construction site led to ___chronic fatigue and stress among the residents.