long long ago=Once upon a time吗?

a long time ago 、long long ago、once和once upon a time的区别 long long ago 与 once upon a time 的用法区别 英语翻译The Dragon's Pearl Once upon a time,long ago,there lived A long time ago 英语故事开头一般用什么单词?如once upon a time;long long algo. long long time ago As a long long time ago.. A long long time ago 歌词 A long time ago 与 Long time ago Long Time Ago 歌词 since a long time ago 可以这么说吗? a long time ago 的同义词