The city at one time must have been prosperous,for it enjoyed a high level of civilization.for能不能改成because啊?这样的for具体有什么用法呢?

at one time in the at the same time,at one at one and the same time是什么意思. at a time；at the time；at one time ；at times 有什么区别 at one time与at the same time和at the time的区别 at a time ,at one time,at the time 有什么区别 在这里的at one time是定语还是状语?1 The city 《at one time》 【must have been prosperous】,for it 【enjoyed a high level of civilization】．2 Each of these represented a goddess and had,《at one time》,been painted 新概念第三册第三课有一些疑问,1.The city at one time must have been prosperous,for It enjoyed a high level of civilization,Each of these represented a goddess and had,at one time ,been painted.at one time 什么成分,为什么放的位 新概念第三册第三课有一些疑问,1.The city at one time must have been prosperous,for It enjoyed a high level of civilization,Each of these represented a goddess and had,at one time ,been painted.at one time 什么成分,为什么放的位 take the chunk off the block at one time at one time one at a time One at a time at one time not at one time at the one time 与 at the same time的差别 On the surface ,at one time ,at a time ,at times ,all the time的比较如题 英语翻译Go save the world one policy at a time