然后，选择器把通道和感兴趣的操作复制到内核空间，让内核为这个应用程序执行实际的poll。
The selector then copies the channels and interested operations into the kernel space and let the kernel do the actual polling for the application.
复制队列映射链接源系统上的发送队列和目标系统上的接收队列，以便为复制数据定义一条通道。
A replication queue map links the send queue at the source and the receive queue at the target to define a pathway for replicating data.
我们将改变在多通道复制的行动序列的可能性。
We added possibility of changing the actions sequences in multipass copying.
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