The details of the complex item could, for example, be represented with an XML data structure and subsequently serialized into a string.
例如，可以用一个XML数据结构表示复杂条目的细节，然后将XML数据结构序列化成字符串。
A business item is similar to a data structure that holds the data exchange between different tasks.
业务项类似于数据结构，用于保存不同任务之间的数据交换。
Base is a repository of data items, whose structure is defined by item types.
Base是一个数据项的仓库，它的结构是由数据项类型(item type)定义的。
A hierarchical database stores data in a tree structure; an order record might have every line item underneath it.
层级数据库按照树状结构存储数据，一份订单记录在它的下面可能有每一行一个项。
Specifies a long pointer to a DRAWITEMSTRUCT data structure that contains information about the item to be drawn and the type of drawing required.
指定了指向DRAWITEMSTRUCT数据结构的长指针，其中包含有关要画出的项和要求的绘图类型的信息。
Specifies a long pointer to a DRAWITEMSTRUCT data structure that contains information about the item to be drawn and the type of drawing required.
指定了指向DRAWITEMSTRUCT数据结构的长指针，其中包含有关要画出的项和要求的绘图类型的信息。
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