What if someone is in copy A and wants to be in copy B?
如果一个在副本A的玩家想进入副本B怎么办?
This will create a new directory, b, containing a copy of the directory structure in directory a.
这会创建新目录b,其中包含目录a中目录结构的拷贝。
However, if the destination directory already exists, then a new directory, a, within the destination directory, b, will be created containing a copy of the files.
但是,如果目标目录已经存在,就会在目标目录b中创建一个新目录a,其中包含文件的拷贝。
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