If someone or something is invulnerable, they cannot be harmed or damaged.
例句
Many daughters assume that their mothers are invulnerable.很多女儿都认为她们的母亲无比坚强。...a system that would make the U.S. invulnerable to nuclear attack.会使美国免受核袭击的系统
英汉词典释义
adj.
不会受伤害的, 刀枪不入的
The dangerous drivers are those who think they’re invulnerable.那些危险驾驶的人就是以为自己不会受伤。
英英词典释义
Adjective
1. immune to attack; impregnable;
"gunners raked the beach from invulnerable positions on the cliffs"