This, in turn, can propagate the error, making it difficult to locate the source of the problem.

反过来，这可能传播错误，使定位问题的源头变得困难。

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In addition, it is difficult (and sometimes impossible) to propagate a transaction across certain heterogeneous platforms or over HTTP (as in the case of Web services).

此外，也很难(有时几乎不可能)在某些异构平台或HTTP之上(像在使用Web服务情况下)传播事务。

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