at the expense of

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

за счет, ценой

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

:
He pursued his career at the expense of his family life.
Он строил свою карьеру за счет семейной жизни.
The company increased profits at the expense of environmental regulations.
Компания увеличила прибыль за счет экологических норм.