如果一个应用程序执行时的性能不合格，较为可取的做法通常是添加更多的列到现有的索引中，或者为一个表添加新的索引，这种做法是首选。
If an application is not performing adequately, it is generally more desirable to add more columns to an existing index, or add new indexes to a table as your first options.
对于示例场景，在应用程序投入生产的数月之后，为应用程序添加了新功能(包括新sql)，现在需要部署该应用程序。
For the example scenario, a few months after the application has been in production, new function (including new SQL) is added to the application, which now needs to be deployed.
将应用程序定义为服务的集合，可帮助进行重用和减少与添加新业务服务相关的变更影响。
Defining your application as a collection of business services AIDS reuse and reduces the impact of the change associated with adding new business services.
记住：学习的过程虽然艰难，但为CDT添加新特性要比从头构建定制调试应用程序简单得多。
And remember: the learning curve is steep, but adding new features to the CDT is far easier than building a custom debugging application from scratch.
并且更新应用程序的路由表，为这个Action添加一个新的路由，如清单1所示。
Also update the application's routing table to add a new route for this Action, as in Listing 1.
主数据库为 MySQL ，以添加新的应用服务器。
The primary database will be MySQL for the addition of a new application server.
通过对近年来离子色谱在食品添加剂检测中的应用进行介绍，为相关研究提供新的思路和方法。
Through the introduction to the application of ion chromatograph in the food additive examination in recent years, the new thought and the method for the correlation research are provided.
按下回车键之后，Excel为我的列表添加新的一列——相应的格式将会应用到所有的新添加的行，列表的边框也将进行相应当调整。
When I press enter to commit the change, Excel adds another column to my table – the appropriate formatting is applied to the rows, the border around the table adjusts, etc. So far so good.
按下回车键之后，Excel为我的列表添加新的一列——相应的格式将会应用到所有的新添加的行，列表的边框也将进行相应当调整。
When I press enter to commit the change, Excel adds another column to my table – the appropriate formatting is applied to the rows, the border around the table adjusts, etc. So far so good.
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