Urinary tract!
你怎么出这么个谜语啊?
Wild guess here: kidney->ureter->bladder->urethra = ...
所有跟帖:
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Ask your 2 sis. to answer, pls!
-走马读人-
♂
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01/14/2010 postreply
18:44:03
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Use google and dictinary.
-走马读人-
♂
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01/14/2010 postreply
18:45:52