在应用程序层次结构中，对话适合于放在什么地方？
了解应用程序在各个层次上的性能以及如何处理每类事务或存在延迟的地方，这是至关重要的一个方面。
Understanding how the application is performing on each tier and for each class of transaction or where latency exists in the code is crucial.
缺点是每次在类层次结构的任何地方添加一个新属性时都必须将一个新属性添加到表中。
The disadvantages are that every time a new attribute is added anywhere in the class hierarchy a new attribute must be added to the table.
埃塞俄比亚拥有廉价而训练有素的劳动力，但是缺乏投资者想看到的高层次的人才：管理者，会计人员以及商业律师，而这些人才投资者们能够在非洲的其他地方找到很多。
Ethiopia has a cheap and disciplined workforce, but not the mulch of managers, accountants and commercial lawyers that investors want to see, and which they can find plentifully elsewhere in Africa.
在最基本的层次上，WSTF是一个供web服务社区的所有成员讨论测试和任何与Web服务相关的其他问题的地方。
At its most basic level, the WSTF is a place for all members of the Web services community to discuss testing and any other concerns related to Web services.
我们在先前讨论JDBC的使用时已阐明，在更深的技术层次上，我们还认识到Web服务并不适合所有的地方。
On a more technical level, as we made clear in our earlier discussion regarding the use of JDBC, we also learned that web services are not applicable everywhere.
我们在先前讨论JDBC的使用时已阐明，在更深的技术层次上，我们还认识到Web服务并不适合所有的地方。
On a more technical level, as we made clear in our earlier discussion regarding the use of JDBC, we also learned that web services are not applicable everywhere.
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