adj.无坚不摧的，不会受伤害的，打不败的，安全的

The superhero seemed invulnerable to any attack from his enemies.
超级英雄似乎对敌人的任何攻击都是无敌的。
The ancient castle's thick walls appeared invulnerable to cannon fire.
古老城堡的厚墙对于炮火攻击似乎是坚不可摧的。
After years of practice, the martial artist felt invulnerable in combat.
经过多年的练习，这位武术家在战斗中感觉自己无懈可击。
The encryption algorithm is so advanced that it's virtually invulnerable to hacking attempts.
这种加密算法非常先进，几乎不受黑客攻击的影响。
The company's reputation was once invulnerable, but a series of scandals have tarnished its image.
这家公司曾经的声誉是无可匹敌的，但一系列的丑闻已经玷污了它的形象。
With his shield, the knight felt invulnerable as he charged into battle.
挥舞着盾牌，骑士冲锋陷阵时感到自己坚不可摧。
The antivirus software provides an invulnerable defense against most malware threats.
这款防病毒软件为抵御大多数恶意软件威胁提供了无懈可击的防御。
The ancient philosophy taught that through spiritual enlightenment one could become emotionally invulnerable.
古代哲学教导说，通过精神启蒙，人可以在情感上变得无懈可击。
The new security system made the museum virtually invulnerable to theft.
新的安全系统使博物馆几乎不可能发生盗窃事件。
Her self-confidence made her appear invulnerable to criticism, but deep down she was just as vulnerable as anyone else.
她的自信让她看起来对批评免疫，但在内心深处，她和其他人一样脆弱。