This paper explores the categorization of traditional astronomy picture, maps, architectural drawings, mechanical drawings, drawings for agricultural uses.

本文以此文题，讨论了中国古代天文图、地图、建筑图、机械图、耕织图等图学名词的分类及其历史价值。

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Looking back over the past year, the editors of the Astronomy Picture of the Day (APOD) have decided to list 12 of the more memorable images posted to APOD in 2007.

回望过去的一年，“每日天文一图”(APOD)的编辑们决定在2007年APOD所展示的图片中选出更值得留念的12张图片。

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Fittingly, this Astronomy Town sky view finds a lovely part of the Milky Way near picture center.

很恰巧的是，在这幅天文城的星空影像中，银河最美丽的区域也大约在影像中心的位置。

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