蝶                                                                                                                                                                                                                                                                                        防辐射                                                                                                                                                                                                                                                             卵成蝶，虫蜕皮。                                                                                                                         后成蛹，化为蝶。                                                                                                                         成蝶难，人不知。                                                                                                                         在困境，力拼搏。

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