虽然它有多种用途，但在执行计划停机时使用它是最合适的，它允许在不中断服务的情况下进行系统的维护。
While it has several purposes, it is best used when performing scheduling outages, which allows for system maintenance to occur with no downtime.
此机制支持为特定的业务用途而定义某个BLA，同时允许将其完整地包括在许多其他组合中，以便服务于更广泛的用途。
This mechanism enables a BLA to be defined for a specific business purpose while letting it be included in many other compositions in its entirety in order to serve a broader purpose.
这就是SAX的真正用途所在：在程序中断处理过程并进行修复之前，允许接收可能错误的数据或者错误状态。
That's where SAX can really help: it allows you to receive possibly bad data or error conditions before the program halts processing and gives you a chance to make course corrections.
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