long since

副词 long since:

1. of the distant or comparatively distant past is Scottish
   同义词：long ago, lang syne

1. He has long since been recognized as a great playwright.
   他早就被公认为伟大的剧作家了。
2. It has long since been satisfactorily established that a high executive does not have a large vocabulary merely because of the opportunities of his position.
   长期以来人们就有呈个想当然的看法：高级行政管理人员不会有很大的词汇量，因为处不那个位置上，他有的是机会。
3. His study is a chaos: his house keeper has long since given up trying to put his papers in order.
   他的书房乱七八糟，他的管家早已放弃为他整理文件了。
4. Long ago; long since.
   很久以前; 往昔