It is much faster to omit data page lookups whenever values can be directly read from index.
那么，每次可以直接从索引中读取值时，省略数据页的查找方法都要快得多。
The message is read directly into a memory data structure that is divided into the data fields of the message.
消息被直接读入分解成消息数据字段的内存数据结构。
Each selection list in an XForms application can also read data directly from a Web service.
X Forms应用程序中的每个选择列表都可能需要直接从Web服务读取数据。
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