rectum

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【词性】：n．

【释义】：

(〔复〕recta)直肠

penetrate the rectum wall穿通直肠壁

polyp of rectum息肉痔

prolapse of rectum脱肛

rectum wall直肠壁

Prolapse of the rectum is prolapse of the rectal mucosa or all the layers of the rectal walt out of the anus．脱肛指直肠或直肠粘膜出肛门外的一种疾患。