空
空，雙稱空間，古名宇，佛書謂之方分、界。物理學基本量，物所以存也。《墨子》云：「宇，彌異所也。」即謂此。毛曰：「空，大也。」吾輩所處，空三維，時一維，共成時空。
據
This article uses material from the Wikipedia 古文 / 文言文 article 空, which is released under the Creative Commons Attribution-ShareAlike 3.0 license ("CC BY-SA 3.0"); additional terms may apply (view authors). 若無側注，諸文皆奉CC BY-SA 4.0以行。 Images, videos and audio are available under their respective licenses.
®Wikipedia is a registered trademark of the Wiki Foundation, Inc. Wiki 古文 / 文言文 (DUHOCTRUNGQUOC.VN) is an independent company and has no affiliation with Wiki Foundation.