但一次又一次，在涉密网络和公共网络之间的这个“空气间隙”被桥接上，其中很大一部分是通过使用光盘和可移动存储设备。
But time and time again, the so-called "air gaps" between classified and public networks have been bridged, largely through the use of discs and removable drives.
所以，下次当您打算进行线上涉密交易时，记得花点时间查看一下网页的安全信息。
Sothe next time you’re about to perform a sensitive transaction, take a moment tokeep a look out for the website’s security information.
让我们来看看一个对飞行器进行静力测试的一个涉密车间，这些测试是为了保证飞机在大载荷飞行状态下机体不破坏。
Let's visit a workshop with restricted access where static load tests of aviation equipment used to be performed. The tests ensured that the plane wouldn't be broken in the air due to heavy loads.
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