saline purgative

例句：

1. 1.The patient was given a saline laxative to help with his constipation.
   病人被给予一种盐性泻药来帮助缓解他的便秘。
2. 2. The doctor prescribed a saline laxative for the patient's relief from abdominal pain.
   医生为患者开了一种盐性泻药，以缓解其腹部疼痛。
3. 3. The saline laxative helped the patient pass the stool more easily.
   这种盐性泻药帮助患者更容易地排出粪便。