单词 | big bang theory |
释义 | big bang theory [¦big `baŋ ´thē·ǝ·rē] ASTRONOMY A theory of the origin and evolution of the universe which holds that approximately 2 × 1010 years ago all the matter in the universe was packed into a small agglomeration of extremely high density and temperature which exploded, sending matter in all directions and giving rise to the expanding universe. Also known as superdense theory. |
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