Much of the money for Pakistan was spent on physical security, like fencing and surveillance systems, and equipment for tracking nuclear material if it left secure areas.

也花费很多财力用于巴基斯坦核武器的物理安全，如隔离和监督系统，以及核原料离开安全区域的跟踪设备。

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When ranchers first began raising cattle on the wide-open plains, they used the Osage orange as fencing material.

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