translation.en: The observatory had just acquired a new book, written by a Russian cosmologist by the name of Joseph Shklovsky, and then expanded and translated and edited by a little-known Cornell astronomer by the name of Carl Sagan.
translation.zh: 天文台刚刚添置了一本新书 是一位俄国宇宙学家所著 他的名字是约瑟夫.什克洛夫斯基，这本书还被 一位鲜为人知的康奈尔天文学家卡尔.萨根