志愿军是包围方也是发起进攻方，如果进攻成功就不需要坑道，主要是一次次进攻遭遇强大火力抵御而失败

来源: victor1988 于 2021-10-09 12:53:01 [旧帖] [给我悄悄话] 本文已被阅读：次

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