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The sophistication of people, places, machines, or methods is their quality of being sophisticated.
It would take many decades to build up the level of education and sophistication required.
要花好几十年的时间来逐步达到所需要的教育和发展水平。
雅思英语词汇收录8785个雅思英语词条，基本涵盖了全部常用雅思英语词汇的翻译及释义，是英语学习的有利工具。