英语词汇essential optional user facility是什么意思，essential optional user facility的用法、释义、翻译、读音、例句、短语词组-英汉汉英翻译词典

单词	essential optional user facility
释义	essential optional user facility　【计】基本的任选用户设施
随便看	second-sighted second-source second-stage second-storey second-story second-strike second-string second-string second-tier second-tier second-time-around echo second-timer second-trip echo second-year second-year second-years secondaries secondaries secondarily secondarily secondarily secondary secondary secondary secondary

英汉汉英翻译词典包含1679246条英汉翻译词条，基本涵盖了全部常用英语单词及常用语的翻译及用法，是英语学习及翻译工作的有利工具。