例如，用户可能需要寻找一个网站(业务查询)买东西(交易查询)或了解某事(信息查询)。

For example, the user may be looking for a website (navigational query) to buy something (transactional query) or to learn something (informational query).

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每个GET调用返回一个json格式的字符串，这是查询的交易的状态数据，见清单5。

Each GET invocation returns a JSON-formatted data representation of the status of the transaction being queried, as shown in Listing 5.

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返回一段永久XML交易数据的样例查询。

Sample query returning a fragment of persistent XML trade data.

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