图6：在一次最终的恒星风中，在蝴蝶星云的中心部位，一颗行将灭亡的恒星将热气吹到了几万亿英里之外星云的翅膀边缘处。

6：In a final gust of wind, the dyingstar at the center of the Butterfly Nebula sweeps hot gas into lacy wingstrillions of miles across.

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图4：在这张蝴蝶星云的照片中，更新的照相机显示出了被恒星风侵蚀后的大气云中的细节局部处。

4：In the Butterfly Nebula the newcamera shows subtler detail in gas clouds being eroded by stellar wind.

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结果：术前角膜地形图以蝴蝶结形为多（72.3％）；

Results: The corneal topography of most examined eyes(72. 3%) was bow tie pattern before PRK.

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