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单词	propterygium
释义	propterygium noun prop·​ter·​yg·​i·​um plural propterygia -ēə : the anterior of the three principal basal cartilages in the paired fins of some fishes (as sharks and rays) compare basipterygium Word History Etymology New Latin, from pro- entry 1 + Greek pterygion fin, literally, small wing
随便看	aboutter abouttest above above all above and beyond above par above reproach above suspicion above the fray above the law above water above-the-fold above/beyond reproach above/beyond suspicion aboveboard aboveground abovementioned abovenamed aboveproof abover aboves abovesaid abovest abovestairs abox

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。