单词	nonagenarian
释义	nonagenariannon‧a‧ge‧nar‧i‧an /ˌnɒnədʒəˈneəriən, ˌnəʊn- $ ˌnoʊnədʒəˈner-, ˌnɑːn-/ noun [countable] Word Origin WORD ORIGINnonagenarian Origin: 1800-1900 Latin nonagenarius ‘containing ninety’, from nonaginta ‘ninety’ someone between 90 and 99 years old
随便看	openness open-plan open primary open prison open sandwich open season open sesame open source open system open-toed Open University open verdict open vowel openwork opera operable opera house operate operatic operatically operating room operating system operating table operating theatre operation

英语词典包含52748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。