The script is very effective and the only downside is that it requires two copies of the information (the reference directory and the encrypted version) instead of just one.

这个脚本非常有效，惟一的缺点是它需要信息的两个拷贝(参照目录和加密版本)，而不只是一个。

youdao

You now have the advantages and drawbacks of two copies of the data.

现在，您了解了两个数据副本的优势和劣势。

youdao

A join transform combines the values of two or more source attributes and copies them to a target attribute.

联接转换组合两个或更多个源属性的值，并将它们复制到一个目标属性。

youdao

Publisher Simon and Schuster says it has sold two hundred million copies of Nancy Drew books in twenty-five languages around the world.

VOA: special.2009.08.24

There's a region up here called the antigen binding region and those-- and there's two copies of that region and it's responsible for antigen binding.

在图片上部有个区域,被称作抗原结合区,而这些,而这里有两个抗原结合区,主要负责与抗原结合

耶鲁公开课 - 生物医学工程探索课程节选

This is possible because virtualization makes cloning software very easy, and Networked Attached Storage devices have extremely sophisticated ways of making virtual copies of large amounts of data and then tracking the changes between the two copies, which saves massive amounts of storage.

FORBES: JargonSpy

Much of the case has hinged on electronic documentation: emails that Ceglia claimed to have exchanged with Zuck about Facebook and electronic copies of the alleged contract that the two signed.

FORBES: Facebook Offers Court 'Smoking Gun' Against Paul Ceglia

Current account holders and people with mortgages should be sent copies of the industry codes - the Banking Code and Mortgage Code every two years.

BBC: Banks 'must speed transfers'