ROGER THAT通常会用于下属收到上司通过无线电发出的作战命令作出的回应(较尊敬的语气); 而COPY THAT则是引申出来的用语，通常会用于战友、同事间互通信息的回应(比ROGER THAT语气稍弱);这种情况也可用ROGER THAT。
roger that 和 copy that 的来源是部队在通讯设备里回答明白说着收到会用这两个。但由于受到美国军队和警方，以及某些电影的影响，已经变成了很多地区的口语了。
Copy that 更突出了会照对方做的意思，而 Roger that 主要就是收到了的意思。
双语例句：
"Roger that, " Jack replied.
“收到。” 杰克答道。
I told Roger that what he had said made me more likely to run.
我告诉罗杰，他所说的话使我参选的可能性更大。
I told Roger that what he had just said showed what was wrong with the administration.
我对罗杰说，他刚刚说的话恰恰显露了政府的不当之处。
Obviously, if you know which file has changed you could only copy that, but you won't always know this information.
显然，如果知道哪些文件修改过了，就可以只复制这些文件，但是不总是能够知道这一信息。
Once completed, you can then copy that collector file to another system, extract it, and then run the appropriate collection script.
一旦完成，您可以将该收集器文件复制到其他系统中，进行提取，然后再运行相应的收集脚本。
They can then copy that instance as an image and re-instantiate it in one of the other pools to perform pre-production testing, or deploy the instance in the live production environment.
然后，用户可以将该实例作为一个映像复制，在另外两个池中的一个中重新实例化该实例 ，以便执行预生产测试；或者在实时生产环境中部署实例。