master copy

基本解释

Teams use a Stream to store the master copy of project files; each repository workspace holds a copy.
團隊使用主開發流（Stream）來存儲項目文件的主副本；每個存儲庫工作區包含一個副本。
After upgrading the configuration on the deployment manager, the local repository of the node is synchronized with the master copy from the deployment manager.
在將部署琯理器上的配置陞級之後，本地的節點存儲庫就會與部署琯理器上的原版拷貝同步。
By simply copying the array reference instead of cloning it, both the message and the class that produces it hold a reference to the master copy of the previous bids array.
通過簡單地複制而不是尅隆數組引用，消息和産生消息的類都保存了前一投標數組的主副本的一個引用。

And the ebook and the printed version will come from the same master copy of that subbed and perfect version.
FORBES: Why Are Ebooks Riddled With Typos?
When all the finishing touches are complete, the master copy of the movie will reside not as a film negative but as a computer file, several terabytes in size (exactly how many terabytes, no one yet knows).
FORBES: Attack Of The Digital Movie