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。