rectal injection

例句：

1. 1.The doctor administered a rectal injection to relieve her pain.
   医生给她进行了直肠注射以缓解疼痛。
2. 2.During the surgery, a rectal injection was used to numb the area.
   手术期间，使用了直肠注射来麻木该区域。
3. 3.The patient received a rectal injection for the relief of chronic constipation.
   患者接受了直肠注射，以缓解慢性便秘。