Extending our car rental example, suppose we want to use EAI to keep the Hire Unit list in RentalSystem up to date, extracting, merging, and transforming the two source lists.

扩充我们的汽车租赁实例，假设我们想通过EAI来保持RentalSystem中列出的Hire Unit保持最新，提取、合并，并转换两个源列表。

youdao

It is a single element in the containing list so it is treated as a unit in the pattern.

它是包含列表中的一个元素，所以它在模式中作为一个单元。

youdao

This line visits the AST tree, starting at the compilation unit (the top-most node), and queries for a list of all method declarations.

这一行访问ast树，起步于编辑单元(最顶层的节点)，并且查询所有的方法声明。

youdao

But Gunn's list also included the American unit of SIG Sauer in New Hampshire and North Carolina's Remington Arms Co.

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Once you've selected a unit, there's a hefty list of possible add-ons, including barcode scanners, smart card readers, Gobi-running 3G, LTE and GPS options.

ENGADGET

For authors and publishers, the agency model provides them with greater control over the timing of their promotions and higher per-unit earnings of 70% of the list price as opposed to 50% for the conventional wholesale pricing model.

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