at the expense of

US /æt ðə ɪkˈspens ʌv/
UK /æt ðə ɪkˈspens ʌv/
"at the expense of" picture
1.

a expensas de, a costa de

resulting in harm or damage to (someone or something else)

:
He pursued his career at the expense of his family life.
Él persiguió su carrera a expensas de su vida familiar.
The company increased profits at the expense of environmental regulations.
La empresa aumentó las ganancias a expensas de las regulaciones ambientales.