The instructions PUSH and QUEUE correspond to LIFO and FIFO operations on the stack.

指令push和QUEUE对应的是对栈的LIFO和FIFO操作。

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If you pop the first item of a list, you have a queue; whereas, if you pop the last item of a list, you have a stack, as shown in Listing 8.

如果弹出list的第一项，则是一个队列；反之，如果弹出list的最后一项，则是一个堆栈，如清单8所示。

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A change that introduces some sort of index that allows access to random elements of the large retransmission queue is critical to address the find-first attacks against the TCP stack.

这个改变引入一些索引，允许对大的重传队列中的元素进行随机访问，这个改变对于解决TCP协议栈的find - first攻击问题很重要。

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