The first copy is the reference copy, and contains an exact duplication of the directory structure.

第一个拷贝作为参照拷贝，其中包含目录结构的精确副本。

youdao

If you want to migrate to a command reference, and it has the same content model as the basic reference, then you can simply copy the reference model.

如果希望迁移到命令参考，而且内容模型和基本的参考相同，那么只需复制参考模型即可。

youdao

Additional users get only a copy of the reference.

其他用户只使用引用副本。

youdao

We asked yesterday morning -and are still asking today - for a copy of the terms of reference that he was given.

BBC: The Minister's end of term report

You may want to include a copy of the operating plan in the appendix for reference as well.

FORBES: 5 Things I Learned About Running Startup Board Meetings

See, the hard copy tax return uses the national insurance number as "tax reference", while the online form ignores this number.

BBC: Taxing internet returns