这些额外的成本并不一定会对信息所有者造成直接影响，这取决于目录供应商所采用的商业模型。
Depending upon the business model adopted by the directory provider, these additional costs may or may not directly impact the owner of the information.
这和我们采用的每种类别均有单一核心模型的方法是一致的；应用程序类别之间的差异使我们不能把所有应用程序都建立在单一核心模型上。
This follows from our approach of a separate core model for each category; differences between application categories prevent us from basing all applications on a single core model.
SQS 采用 “最终一致性（eventual consistency）” 模型，这意味着您可以向队列发送消息，但是队列的消费者不一定能够在特定的时间段内看到它。
SQS follows the model of "eventual consistency," meaning you can send a message to the queue, but a consumer of that queue may not see the message for some significant period of time.
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