"long since" in Chinese (Simplified)
早就很久以前
Definition
表示某事很久以前就发生了，或者某事已经持续很长时间。
Usage Notes (Chinese (Simplified))
“Long since” 主要用于正式或书面语，常与现在完成时或过去完成时连用，如“has long since ended”。不用来谈论将来要发生的事。
Examples
The store has long since closed.
这家店**早就**关门了。
He moved away long since.
他**早就**搬走了。
Their friendship had long since ended.
他们的友谊**早就**结束了。
We’ve long since stopped worrying about it.
我们**早就**不再担心这件事了。
Those rules have long since become outdated.
那些规定**早就**过时了。
If you’re looking for him, he’s long since left.
如果你在找他，他**早就**走了。