| 单词 | punctuated equilibrium |
| 释义 | punc·tu·at·ed equilibrium (pŭngkch-ā′tĭd) n. 1. The theory that the evolution of life on earth typically follows a pattern in which long periods of little morphological change are punctuated by relatively short periods of significant change, when speciation occurs. 2. Evolutionary development of this kind. |
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