英语词汇“optional”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	optional
释义	Search result show the entry is found in: optional pass , or optional referendum , or optional writ
随便看	diketo diketo- diketone diketopiperazine dikey dikkop diktat dil dilacerate dilaceration dilactone dilambdodont Dilantin dilapidate dilapidated dilapidation dilapidator dilatability dilatable dilatancy dilatant dilatation dilatational dilatative dilatator

英语词典包含332784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。