The activity nested within this fault handler tries to correct the situation such that regular processing can continue outside the scope or alternate ways to complete the process can be taken.
嵌套在这个故障处理程序中的活动试图纠正这种状况，以使正常处理可在作用域外继续或使用其它方法来完成流程。
Take the case where a column constantly contains a value of -9999 and this indicates to programs that consume this data that alternate processing should be performed.
如果一个列连续地包含值- 9999，那么这是向使用该数据的程序表明需要执行备选的处理。
Take the case where a column constantly contains a value of -9999; this indicates to programs that consume this data that alternate processing should be performed.
假设一个列恒定地包含一个值- 9999；这告诉使用该数据的程序，应该执行备选的处理。
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