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杨利伟说看不到，外国宇航员说能，到底能不能从太空看到长城？
杨利伟曾经非常肯定地说：太空中看不到长城。这是真的吗？
极简天文学42/56
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App00:50杨利伟曾经非常肯定地说：太空中看不到长城。这是真的吗？
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