美國人這樣回答：肛門有三種功能。。。。1.。。。2.。。。3.。。

來源: 於 2017-03-18 18:15:32 [舊帖] [給我悄悄話] 本文已被閱讀：次

The anus (opening of the anal canal) functions as eliminator of waste, sexual organ, and intake orifice for treatment (e.g., suppository, enema).