Since tr is purely a filter, you generate input for it using the cat command.

由于tr是纯粹的过滤器，因此您将使用cat命令为其生成输入。

youdao

Since you are splitting the input array into two output arrays, you create a second for each transform with a different input filter.

由于打算将输入数组分成两个输出数组，所以可以使用其他输入过滤器创建第二个For each转换。

youdao

It then walks through building an import filter (required for input file loading) and export filter (required for output file saving).

然后，讨论如何构建导入过滤器(用来装载输入文件)和导出过滤器(用来保存输出文件)。

youdao

In fact, Grossman agrees that the sites' vulnerabilities weren't Microsoft's fault as much as the result of sloppy Web coding on the part of the Web sites' own developers, who failed to filter user input for manipulative commands.

FORBES: Google-Hacking Goes To China