anal triangle of perineum

例句：

1. 1.The anal triangle of perineum is a common site for bacterial infections.
   肛门三角区是细菌性感染的常见部位。
2. 2. During childbirth, the analtriangle of perineum can becomeinflamed and painful.
   分娩时，肛门三角区可能会发炎并疼痛。
3. 3. A thoroughexamination of the anal triangle ofperineum is essential for proper diagnosisand treatment.
   对肛门三角区的彻底检查对于正确的诊断和治疗至关重要。