英语词汇非强制性是什么意思，非强制性的用法、释义、翻译、读音、例句、短语词组-英汉汉英翻译词典-电脑手机教程网

单词	非强制性
释义	ENGLISH PHRASES 英文词组〔coverage〕optional/additional coverages 非强制性/附加险韦氏高阶〔optional〕an optional activity 非强制性活动英汉大词典
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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。