一个用户概要文件包含有关该用户的个人细节信息、用户对领域概念的知识、用户目标以及应用程序所需的其他信息。

A user profile consists of personal details about the user, knowledge of the user on domain concepts, user goals, and any other information that is required by the application.

youdao

您可以应用从本文学到的知识处理数PB的日志文件；因此，MapReduce抽象是一种非常有用的工具，尤其是在云环境中。

You can easily take the lessons from this article and apply them to petabytes of logfiles; that is the essence of why the MapReduce abstraction is a useful tool, especially in a cloud environment.

youdao

要应用以下知识点：文件的读写；字符数组的操作；命令行参数的使用。

Knowledge points to the following: file read and write character array operations command line arguments to use.

youdao