One of the most important functions every computer user must learn is how to save a document. Invoking this function means taking whatever changes a user has made to the copy in computer memory and writing them onto the disk copy of the document.

• 每个计算机用户都必须学习的重要功能之一是如何保存文档，调用该功能意味着用户接受已经对计算机内存做出的任何改变，并且将其写到文档的硬盘复制中。