立于不败之地
- na.be in an unassailable [invincible; impregnable] position
- 网络remain invincible; be in an invincible position; to be in an invulnerable position

立于不败之地
1.be in an unassailable [invincible; impregnable] position; base oneself on sure ground; be invincible; establish oneself in an invulnerable position; make one's position impregnable; place oneself in an invincible position; remain invincible
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Enterprises can't establish in an unassailable position in the market competition unless innovating constantly.
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