All too often though, you have to accept data that if not carefully handled will cause problems; sometimes data gets through that shouldn't.

然而，更通常的情况是：您必须接受数据，这些数据如果不仔细处理，就可能会产生问题；有时，接受的数据是不应该接受的。

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There are risks to be handled, and some definitions to be cleaned up, but if managed carefully, overlapping iterations can be a useful approach to organizing a project.

要处理的风险和一些要整理的定义是存在的，但如果能小心地管理，重叠迭代可以成为一个组织项目的有用方法。

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But in the past few weeks three newish factors have coalesced to create a set of circumstances that could shake the country up: for better, if matters are handled carefully, or for much worse.

但是过去几周里三个新的因素联手创造了一些可能改变这个国家的新情况：如果小心行事则这是些好消息，否则就会比现在还要糟糕得多。

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While this will be helpful in reducing foreclosures in the short run, if not handled carefully it may also create perverse incentives for increased delinquencies in the future if the terms require borrowers to be delinquent in order to receive the windfall of principal reduction.

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But these can be intrusive or annoying if not handled carefully.

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