Not having seen a debt-market crash since 1998, investors piled into ever riskier securities in 2003-07 to maintain yield at a time of low interest rates.

由于没有看到债券市场在1998年的暴跌，为了在低利率时期保持收益，在2003年7月投资者们的资金都流向了更有风险的证券。

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Any use of an invalidated iterator is likely to yield a run-time error, but there is no guarantee that the program will crash or otherwise make it easy to detect the problem.

任何无效迭代器的使用都可能导致运行时错误，但程序不一定会崩溃，否则检查这种错误也许会容易些。

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