He has checked the copy against the original.
他已把抄件与原文核对过了。
youdao
At the simplest level, a Rails application can run right out of a checked-out copy of the source code.
最简单的情况是，一个Rails应用程序正好可以运行源代码的检出副本。
I can reserve the checked out copy for you.
我可以预留那本借了出去的给你。
The articles are copy-edited and checked for plagiarism.
ECONOMIST: Can technology help make online content pay?
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