Each character is an off or on setting.
每个字符都是一个开或关的设定。
无线电关上了还是开着的？
The chkconfig command can also be used to switch any service off or on.
chkconfig命令还可以用来切换任何一个服务的开或关。
煤气关着还是开着？
He imagined each node in the network as a switch able to turn certain neighboring nodes off or on.
他想象网络中的每个节点就像开关，能打开关上附近的节点。
He imagined each node in the network as a switch able to turn certain neighboring nodes off or on.
他想象网络中的每个节点就像开关，能打开关上附近的节点。
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