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It may not be the sort of thing to discuss over dinner, but research is opening a lively debate on the origin of the anus.

这也许不是饭后闲谈的事情，但是研究正开启关于器官起源的激烈的争论。

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Objective To evaluate the value of the one-layer suture manual technique in the anus reserved operation for low rectal cancer.

目的探讨单层缝合手法吻合在低位直肠癌保肛手术中的应用价值。

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The new definition removes the reference to females and says rape is "the penetration, no matter how slight, of the vagina or anus with any body part or object" without the consent of the victim.

BBC: FBI updates rape-victim definition to include men

Deep in oceans around the world lurks a type of worm without a mouth, anus or gut that makes its living by eating the bones of whales and other deceased sea creatures.

MSN: Zombie worm has no mouth �� but it feasts on whale bones