As discussed previously, if you don't give a command-line argument, the application will use the default feed sources input XML file (rss_feed_sources.xml).
我们在前面讲过，如果没有提供命令行参数，那么此应用程序将会使用默认的提要源输入xml文件(rss_feed_sources . xml)。
The same way a VP of Sales cannot give a command to a CEO, a component that is lower in rank cannot send an execution “command” to a component on a higher level.
正如销售VP不能给CEO下命令一样，低层级的组件不能给高层级的组件发送执行“命令”。
At that point we will give a command, offer the lure gesture then and mark-reward the behavior.
在这个时候我们可以发出口令，做出诱导手势，然后再标记、奖励行为。
When we initially give a command we follow it with the signal we used to get the dog to perform the behavior.
当我们最初给出口令后，会跟着给一个手势，以便狗儿服从命令、作出动作。
When we initially give a command we follow it with the signal we used to get the dog to perform the behavior.
当我们最初给出口令后，会跟着给一个手势，以便狗儿服从命令、作出动作。
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