包皮

例句：

1. 1. He had to have his circumcised at birth.
   他出生时必须被割掉包皮。
2. 2. The procedure is usually performed under local anesthesia.
   这种手术通常在局部麻醉下进行。
3. 3. Circumcision is a common practice in many cultures around the world.
   环切术是世界上许多文化中常见的做法。