invulnerable
adj
1 ~ (to sth) that cannot be wounded, hurt or damaged by attack 不能伤害的; 不能攻破的
a fortification that is invulnerable to attack 固若金汤的防御工事.
2 (fig 比喻) secure; safe 安全的; 保险的
in an invulnerableposition 立於不败之地.
At the time of his death, one person praised him as follows: Future generations, it may be, will hardly believe that such a person as this walked upon this earth.