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Gas streams gush into the Milky Way's center and pile up into thick clouds, but for some reason, those ingredients don't materialize into as many stars as astronomers would expect.
，这一点在PDF资料中也有详细论述
version: 3.10 # 3.1
在海南三亚市那受村，村民苏其文清晨便在田头忙活。村里开设“田间课堂”，他认真当“学生”。从脱贫户成长为十里八乡有名的“植物医生”，他牵头创办专业合作社，各项收入近30万元。
"We don't know where they go, but they disappear for about 10 days, and then they'll come back again. And without the CCTV, we never knew that."