新增的策略还包括对每个OS TL的更加长期的支持。
The new strategy also includes a longer period of support for each OS TL.
这主要是因为交易商谁在以往得到长期的支持水平将拥有自己的立场，如果在水中的支持水平被打破了。
This is largely because traders who got long at previous support levels will own their position under water if the support level is broken.
在软件生命期尤其是长期的支持和维护过程中(这也是应用程序生命周期中最昂贵的一个阶段)，应用程序和领域模型的重用将提高ROI。
ROI will rise from the reuse of application and domain models across the software lifespan, especially during long-term support and maintenance, the most expensive phase of an application's life.
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