He was trapped in an unhappy marriage.

他陷入不幸的婚姻之中。

《牛津词典》

Herr life was blighted by an unhappy marriage.

她的一生被不幸的婚姻所毁·。

youdao

Meaning: it is bad luck to inherit a ring from an unhappy marriage.

意思是：继承一个来自不美满婚姻的戒指会带来霉运。

youdao

More than a decade later I returned to Paris with two young children, fleeing an unhappy marriage.

WSJ: Kati Marton on Her Lifelong Therapist: Paris

That was an unhappy marriage and the firm became independent again in 1991.

ECONOMIST: Manpower

Other things people did following diagnosis include ending an unhappy marriage, starting a business and learning to play the piano.

BBC: Cancer 'changes outlook on life'