Often a process is programmed as a loop in which multiple actions are performed.

在编写进程时，通常把它编写成可以在其中执行多个操作的循环。

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And with multiple files, you then have to loop.

对于多个文件，您必须执行循环。

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Create a while loop to select multiple shippers.

创建while循环，以选择多个托运人。

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Create a while loop to select multiple shippers.

创建while循环，以选择多个托运人。

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