"We met once long ago"
"they long ago forsook their nomadic life"
"left for work long ago"
"he has long since given up mountain climbing"
"This name has long since been forgotten"
"lang syne"
long since的用法和样例:
例句
The dinosaurs disappeared long ago. 恐龙很久以前就绝种了。
She said she had seen the film long before. 她说她很久以前就看过这部电影。
He had long nourished the dream of being an actor. 很久以来他一直梦想着成为一名演员。
For a long time he had wanted to take up writing. 很久以来,他一直想从事写作。