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海底世界：揭密海星是如何交配的? (组图)(4)

2007-07-02 10:48:01 论坛　【大中小】发表评论

精子和卵子在水中相遇，完成受精，形成新的生命。从受精的卵子中生出幼体，也就是小海星。

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