The Berlin Underworlds Association already runs tours of nearby wartime and Cold War shelters, but preparing the half-demolished air defense fortress for visitors was a task of a different order.

柏林的“大地联盟”已经开发了新的旅游项目，景点就是附近那些战时和冷战期间留下的防御设施，但是想要把已经毁损过半的防空堡垒呈现在游客面前是一项非同寻常的任务。

youdao

In the second massive single-player encounter, Chris was leading a high level mage and his party in the defense of fortress walls.

在第二场大规模单人游戏遭遇中，Chris使用了一个高等级的法师和他的队友一起保卫一段城墙。

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Neville Chamberlain, who was neither, starved the army and navy on the theory that the revolution in military affairs of his time made the only defense feasible that of a "Fortress Britain" protected by the Royal Air Force -- and then failed in building up the air force.

CENTERFORSECURITYPOLICY: Center For Security Policy

While vigilance is always the first line of defense, installing a security scanner onto your PCs and Android mobile devices will help keep the bad guys out of your digital fortress.

FORBES: 2012: Year Of The Android And Mac Malware