英语词汇has been cooperating since 1999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 cooperating since 1999
释义	since prep — 自 prep • 打 prep since — 因为 adv • 兹因 since conj — 既 conj • 既然 conj • 既是 conj has-been — 过气
随便看	on your left side on your local system on your Macintosh on your mark, get set, go! on your mark, get set, go! on your mark, get set, go! on your marks on your marks, get set, go on your marks, get set, go on your marks, get set, go on your mobile on your morning on your neck on your own accord on your own behalf on your own feet on your own initiative on your own judgement on your own terms on your own time on your paper on your parents on your part on your Paypal account on your payroll

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。

since prep —