Again, the answer lies in backward compatibility.

答案同样是因为向后兼容性。

Maintain backward compatibility with the original schema.

维持和原始模式的向后兼容性。

The first driving factor for the site was backward compatibility with older browsers.

该站点的第一个决定因素是对旧浏览器的向后兼容性。

Protocol adapters can be used to provide backward compatibility to existing and established NMSs.

可以用协议适配器来提供对现有的和已建立的 NMS 的向后兼容性。

Backward Compatibility is an area we where have focused much attention.

向后兼容性是我们非常关注的领域。

The concept of backward compatibility is closely related to the concepts of change and change management.

向后兼容性的概念与变更和变更管理的概念紧密相关。

Although it is becoming easier, backward compatibility depends on the expectation of your client and needs of your client's users.

尽管越来越容易了，但是向后兼容性仍然依赖于客户的期望和用户的需要。

Once it's exposed, you need to keep in mind that any changes to the calling arguments or semantics may break backward compatibility.

一但被暴露，你需要在头脑中保持任何对于参数或者语义的改动也许会破坏向后的兼容性。

This imposes not merely a level of responsibility regarding backward compatibility, but a set of challenges relating to a demanding class of users.

这不仅意味着关于向后兼容的责任，而且是与大量不同类别的用户相关的挑战。

The development laboratories work very hard to ensure backward compatibility.

开发人员设法确保实现向后兼容性。

Control is retained for backward compatibility and for special needs.

控件，以备向后兼容和特殊需要。

Again, the frustrating answer is to preserve backward compatibility.

同样是为了保持向后兼容。

It is recommended that the service provider assess each change in this category on a case-by-case basis in respect to its backward compatibility.

建议服务提供者参考其向后兼容性对此类变更进行逐个评估。

We just have to devise some notion of view that works in the context of generic types and also allows for backward compatibility with the JVM.

我们只要设计一些观点，这些观点在泛型类型的上下文中有效，并且还允许向后兼容JVM。

It contains many panes not in use but kept for backward compatibility.

它包含许多不再使用但用来后向兼容的窗格。

In fact, much of the code has been completely rewritten, in some cases at the expense of backward compatibility.

实际上，许多代码都被完全重新编写过了，这样做在某些情况下是以牺牲向下兼容为代价的。

In this case, ship a policy assembly along with your satellite assembly stating that your new satellite assembly has backward compatibility with your old satellite assembly.

在此情况下，将策略程序集与附属程序集一起提供，它指示您的新附属程序集与您的旧附属程序集向后兼容。

Must be able to handle null field name for backward compatibility.

必须能够处理向后兼容空字段的名称。

For developers who have written applications for both iPhone and iPad, this backward compatibility will feel familiar.

对于编写iPhone与iPad应用的开发者来说，这种向后兼容性是再熟悉不过的了。

Backward compatibility in Avro documents.

Avro文档的向后兼容性。

Python 3.0 breaks the backward compatibility with previous versions of the language.

Python3.0打破了与旧有版本的向后兼容性。

To specify required behavior under certain error conditions or when data that is not understood is received, to make it easier to make future revisions that do not break backward compatibility;

指定在某种错误情况下或接收到不能理解的数据时的必须行为，这使得未来在不破坏向后兼容的情况下更容易修订协议；

If you still want to use the old update-manager interface despite all the advantages and backward-compatibility of the Equinox p2 Update UI, you can do so.

如果您不在乎Equinoxp2UpdateUI 提供的诸多优点和向后兼容性，而是坚持使用旧的更新管理器，当然也是可以的。

Although some backward-compatibility issues exist, this version's features make Drools even more attractive than before.

虽然现在还存在一些向后兼容性问题，但这个版本的特性让Drools比以前更有吸引力。

Actually, db4o's knack for backward-compatibility deserves a bit more explanation.

实际上，db4o向后兼容的妙法值得解释一下。

Tapestry V5 promises many enhancements over V4.1, but there is no planned backward-compatibility.

TapestryV5在V4.1 的基础上承诺了很多增强，但是没有规划向后兼容。

Existing code using this collection continues to work for backward-compatibility purposes.

然而基于回溯相容性，使用此集合的现有程式码可以继续工作。

It is not without its critics, but newer versions of the specification are attempting to address these concerns while maintaining backward compatibility.

当然，并非没有批评的声音，但规范的新版本在保持向后兼容性的基础上正在努力尝试解决这些问题。