相关单词近義詞 unassailable 攻不破的, invulnerable 固若金湯的, secure 安全的, invincible 不可征服的, untouchable 不可接觸的above criticism, 無可非議, shatterproof 抗震的(耐震的..., armoured 披甲的, armored 裝甲的, protective 保護的, reinforced 加強的, watertight 不漏水的, unshakable 不可動搖的臨近詞bullet, bullets相似詞bullet point, bullet train, bulletin, bulletin board, bullfight, bullfinch, bullfrog, bullheaded, 返回 bulletproof