请问a long long ago是什么意思?

请问a long long ago是什么意思? Not that long ago.请问这里的ago是什么意思?上句是：That was a long time ago. A long time ago A long long time ago 歌词 long before和long long ago的区别是什么? Long Long Ago 歌词 long long ago Long.long.ago. long long ago A Long Time Ago 歌词 long long ago,there_____an old king and a beautiful bird 的答案是什么 a long time ago 、long long ago、once和once upon a time的区别 LONG LONG AGO ,THERE IS A 求人翻译 Long long ago,there was a… He… long long ago=Once upon a time吗? Not that long ago.是什么句型? Long long ago,there was a…… 补充下去 Long long ago,there was a…… 补充下去 He could run the machine by himself______.A.long before B before long C a long ago D ago long