palliative|palliatives

止痛药只能暂时缓解疼痛，并不能治愈疾病。

Painkillers are just a ___palliative that eases pain temporarily, not a cure for the disease.

这些药物只能作为缓解症状的辅助治疗。

These medications only serve as ___palliatives to relieve symptoms.

这些药物只是缓解症状的姑息治疗，并不能根治疾病。

These medications only provide ___palliative relief for symptoms, not a cure for the disease.