invincible

adj.

不可战胜的，不能征服的；无敌的；无攻不克；无前

remain invincible立于不败之地

invincible position不败之地

1. The soul of the British people and race had proved invincible.
   英国人民和英国民族的精神已经证明是不可征服的。
2. We have an invincible army.
   我们有一支不可战胜的军队。
3. The oppressed nations are invincible as long as they hold together.
   被压迫民族只要团结一致，他们就是不可战胜的。

Vulnerable But Invincible
Gay men's friendships: Invincible communities.
Vulnerable But Invincible: A Study of Resilient Children
Vulnerable but invincible: High risk children from birth to adulthood
The painful truth: physicians are not invincible.
Vulnerable But Invincible: A Longitudinal Study of Resilient Children and Youth
Vulnerable But Invincible: A Longitudinal Study of Resilient Children and Youth
Invincible, but not invisible: imaging approaches toward in vivo detection of cancer stem cells.
The ecology of anthrax spores: tough but not invincible.
The oxidative stress theory of aging: embattled or invincible? Insights from non-traditional model organisms