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When the star eventually releases its outer layers, it shrivels down to its core in what's known as a white dwarf star. At that point, it'll be about the size of Earth.
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"We've also got these big tanks full of oxygen and nitrogen, which are mixed to make air, and also water, so that we can provide everything that the astronauts need in the crew module to keep them alive on their journey."
看着如今案头的繁忙，很难想象，在20世纪70年代，这门手艺曾因黄河水患和时代变迁几近凋零。明清鼎盛时期，朱仙镇作坊曾多达300多家，后来最难的时候，村里只剩下寥寥几家在苦撑。
我以为她没有分离焦虑，没想到，周三起床时，就坚持不住了，说不想起床，嗷嗷哭。我们就对她进行疏导，告诉她你很棒坚持了很多天了，但是你大了，需要有自己的朋友，要上学学习知识，还有老师、小朋友跟你玩。不是挺好的吗。