很久以前的英文：
a long time ago
ages ago
away back
langsyne
long since
long time ago
time out of mind
The dinosaurs disappeared long ago.
恐龙很久以前就绝种了。
That was a great while ago.
那是很久以前的事了。
I read that Book long ago.
我很久以前读过那本书
He died long ago.
他很久以前就去世了。
Human kind was formed a long time ago.
人类是在很久以前形成的。
That warship was laid up long ago.
那艘军舰很久以前就退役了。
" Long ago, people believed that the world was flat."
很久以前人们相信地球是平的。
Hunters peopled these forests long ago.
猎人们很久以前就住在这片森林里。
Oh! I don't remember. It was so long ago.
哦!我不记得了。那是很久以前的事了。
It was a pact made in fun long ago.
这是很久以前在开玩笑时定下的口约。
adj. 长的；长时间的；冗长的；长音的
adv. 长久地，长期地；始终
n. 长时间，长时期；长音节
v. 渴望
abbr. 经度，经线
But perhaps not for long.
但这并不会持续太长时间。
It will take a long time to read through this long story.
要读完这长篇故事要花相当长的时间。
propagation of long and very long wave in the ionosphere
电离层长波和超长波传播
n. 时间；（一段）时光；时机；机会；历史时期；时代；次；回；倍
v. 测定…所花时间；调准；调整；测定…所花时间
adj. 时间的；定时的；定期的；分期的
discrimination time
辨别时间辨别时间
It is time to go.
该走了。
They are not in step with the times.
他们跟不上时代的步伐。
adv. 以前，以往
adj. 以前的，过去的
That was a great while ago.
那是很久以前的事了。
Hunters peopled these forests long ago.
猎人们很久以前就住在这片森林里。
The spring dried up long ago.
这泉水早就干涸了。