英语单词“optional”的翻译、意思、用法、释义-英汉词典

单词	optional
释义	optional['ɔpʃənəl]adj.1.■可选择的，任选的，随意的，非强制的
随便看	Nick 2 nickase nickel nickel-63 nickel acetate nickel acetylacetonate nickel-aluminum bronze nickel ammonium sulfate nickel-and-dime nickel-and-dimed或 nickeled-and-dimed nickel-and-diming或nickeling-and-diming nickel-antimony glance nickel arsenate nickel bag nickel bloom nickel brass nickel-cadmium battery nickel carbonate nickel carbonyl nickel chloride nickel-chromium steel nickel cyanide nickel defense nickel delay line nickel formate 横幅疏枝，如逢旧识，同在天涯六月江南暑未阑，一尺花冰试枕看料想浮生难勾霜月照庭户，晴云点阶墀烦师掬清溜，为我洗尘心春风吹落君王耳，此曲乃是升天行翰林诗笔振千古，珊瑚照夜横雕梁以奇承耦震初爻，以耦承奇兑三索料得君心当此际，事国繁华闲田地幼常推李泌，老忽哭卢纶洞庭连天楼赐盛京将军阿兰泰初至天台白纻舞歌·其二·二首步蟾宫龟卦州域昆轴蕫蓈越劲