英语词汇has previously been observed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 previously been observed
释义	previously — 曾 • 先前 • 以前 adv • 之前 • 此前 • 曾经 • 以往 adv • 其先 • 早前 • 在此之前 • 前来 • 从前 • 早先 • 先头 has-been — 过气
随便看	not even once not even paid not even possible not even remotely not even represented not even similar not even slightly not even started to not even sure not even talking about not even that not even through not even try not eventuated not even until not even used not even with not even worth not ever not everybody not everybody is equal not every case not everyday not every detail not every kind

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。

previously —