anorectal line
... haustra of colon结肠袋 anorectal line肛直肠线 canine teeth 尖牙 ...
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肛直肠线、直肠盆膈结合部与尾骨尖几乎处于同一个平面上。
The anorectal line, the point of rectum passing through the pelvic diaphragm and the coccygeal tip are almost at the same level.
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