anal papilla

例句：

1. 1. The doctor removed the anal papilla for a biopsy.
   医生为了活检切除了肛门乳头。
2. 2.The patient's anal papilla was enlarged and tender to touch.
   患者的肛门乳头肿大且触感疼痛。
3. 3.The anal papilla is a sensitive area that should be cleaned carefully.
   肛门乳头是一个敏感区域，需要仔细清洁。