This (I hope) will be unique within the scope of the trace, and the combination of thread ID and random number should afford you uniqueness across multiple JVMs.
它(我希望如此)在跟踪的范围内将是唯一的，而线程ID和随机数的组合应该能够满足跨越多个JVM的唯一性。
Established trace relationships allow enhanced merging between the target and source elements when the transformation is rerun. (the enhanced functionality is beyond the scope of this article.)
建立的追踪关系，允许在返回致转换时，目标与源元素之间的改善的合并操作(改善的功能超出了本文的讨论范围)。
Looking downwards (trace to) and questions like "How is the scope affected, if we cannot implement this use case?"
向下看(trace to)，以及这样的问题“如果我们不能实现此用例，范围是如何受到影响的？”
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