mortal injury meaning in French

blessure mortelle

To cope with a mortal injury she sustained in a mission, Mockingbird was injected with an experimental serum combining the Super Soldier Serum that gave Captain America his strength and the Infinity Formula that has slowed Nick Fury's aging.
Lors d'une mission, elle a été blessée mortellement, ce qui a poussé le SHIELD à lui injecter un mélange d'une forme de sérum du Super-Soldat (comme celui de Captain America) et de l'Infinity Formula (comme celui de Nick Fury) qui permet un ralentissement du vieillissement.