Prepare and maintain files, reports, letters, memorandums and other relevant business documentations.

准备及维持文件、报告、书信、备忘录及其它相关商业文件。

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The NSA director, General Keith Alexander, is coming under scrutiny after he told a crowd gathered at the Def Con hacker conference that the spy agency "absolutely" does not collect data from and maintain files on American citizens.

ENGADGET: Former NSA official says agency collects Americans' web data, director denies charges

The FBI and the Art Loss Register maintain comprehensive files on stolen works, and list them online.

FORBES: Some Hypes Never Die (And Other Lessons From The 2011 Art Market)

"My work on this project right now is to maintain these files, " he adds, referring to Dad's memorabilia.

WSJ: The Weekend Interview: Will Google's Ray Kurzweil Live Forever?