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一个语法：Collagen,a (strong) rubbery protein,(supports the) ear flaps and the tip (of nose) in (humans). 哪个错？
rabbitbug
(兔八哥过Christmas？)
(#320235@0)
Last Updated: 2002-1-2
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一个语法：Collagen,a (strong) rubbery protein,(supports the) ear flaps and the tip (of nose) in (humans). 哪个错？
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