英语词汇did not exist before怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	did not exist before
释义	did not— 未 not exist— 乌有 not so— 不然 exist v — 在 v • 有 v • 存在 v • 存 v • 生存 v not — 不 • 没 • 未 • 并不 adv • 非 • 否 • 不是 • 无 • 也不 adj before — 前 • 之前 • 以前 • 先前 • 前来 • 在未 adv • 先头 • 前儿 • 早先 before conj — 在之前 conj before prep — 先于 prep
随便看	certificate of business certificate of calibration certificate of capacity certificate of Chief certificate of citizenship certificate of classification certificate of commendation certificate of Company certificate of Company Certificate of company registration certificate of Company registration certificate of competence certificate of competency Certificate of competency as master certificate of completion Certificate of Compliance certificate of compliance 2006 42 certificate of confirmation certificate of conformity certificate of conformity coc certificate of conformity with certificate of copyright registration certificate of corporate certificate of correspondence certificate of coverage

英汉双解词典包含2273206条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。

did not—