Your code often needs to walk through things item by item, whether it's a list, a file, or an XML document.

代码通常需要逐项遍历内容，不管它是列表、文件，还是XML文档。

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Fundamentally, the for loop involves what is known as an iterator, which is used to move through the collection item by item.

本质上，for循环涉及到一个迭代器(iterator)，用于在集合中逐项移动。

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Items of the income statement should be arranged according to the formation and distribution of profit, and shall be shown item by item.

损益表的项目，应当按利润的构成和利润分配各项目分项列示。

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Humans item by item will be better than a machine, but machines will be better than humans en mass.

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In a supermarket, for instance, they could eliminate the need to unload the trolley and scan its content item by item.

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We have gone through every department's spending line by line, item by item, looking for inefficiency, duplication, and programs that have outlived their usefulness.

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