单词	Mesolithic
释义	Mesolithic adjective Me·​so·​lith·​ic ˌme-zə-ˈli-thik  : of, relating to, or being a transitional period of the Stone Age between the Paleolithic and the Neolithic Word History Etymology International Scientific Vocabulary First Known Use 1866, in the meaning defined above
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英语词典包含469781条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。