au prix de
The soldier saved his friend at the cost of his own life.
Le soldat a sauvé son ami au prix de sa propre vie.
He succeeded in business at the cost of his health.
Il a réussi en affaires au détriment de sa santé.
He saved the boy from drowning, but only at the cost of his own life.
Il a sauvé le garçon de la noyade, mais au prix de sa propre vie.
He did his duty at the cost of his health.
Il a fait son devoir au prix de sa santé.
He saved her at the cost of his own life.
Il l’a sauvée au prix de sa propre vie.
He wanted to succeed, even at the cost of his health.
Il voulait réussir, même au prix de sa santé.
He worked at the cost of his own time.
Il travaillait au détriment de son propre temps.
People usually become famous at the cost of their privacy.
La célébrité se fait généralement au détriment de la vie privée.