英语词汇has been conducted 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	has been conducted before
释义	before — 前 • 之前 • 以前 • 先前 • 前来 • 在未 adv • 先头 • 前儿 • 早先 has-been — 过气 before conj — 在之前 conj before prep — 先于 prep
随便看	render homeless render identification render images render impossible render impracticable render inadmissible render inapplicable render incapable render independent render ineffective render ineligible render information rendering rendering a decision rendering advice rendering advisory rendering an opinion rendering architecture rendering a service rendering available rendering coherent rendering consultancy rendering content rendering contribution rendering data

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。

before —