He broke down from hard work and passed away full of regrets.

He broke down from hard work and passed away full of regrets.
He broke down from hard work and passed away full of regrets.

He broke down from hard work and passed away full of regrets.
他因过度工作而累垮,然后满载着赞誉逝去.
（也可以说是“鞠躬尽瘁,死而后已”）

他鞠躬尽瘁死而后已。