More certain, however, is that the debt burden and default rates for graduates are particularly high.

然而，可以更确定的是毕业生的债务负担和违约率居高不下。

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One recent estimate expects default rates on high-yield debt to quintuple from 0.9% in 2007 to 4.8% this year. If the downturn endures, even that could prove optimistic.

一份最近的评估报告预计高产债的违约率，从2007年的0.9%上升到今年4.8%，翻了4倍。若衰退持续，上述情况还算是乐观估计。

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And these high interest rates, by raising the burden of debt service, make default more likely.

而这些高的利率有加重了债务服务的负担，增大了违约的可能性。

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This heavy burden of debt, combined with a troubling job outlook, has led to an understandable rise in student loan debt default rates.

FORBES: 3 Reasons to Never Default on Your Federal Student Loan

Graduates from institutions within the Association of American universities, the 62 leading North American research universities, have far lower student-debt burdens and loan-default rates than graduates of the for-profit institutions that supposedly will end college as we know it.

FORBES: Through Eight Centuries of Criticism, College Remains Worth It

Earlier this week, a FICO study revealed that student loan debt has increased dramatically and the default rates on these loans are now much higher than previous years.

FORBES: More Than Half Of Student Loans Are Now Delinquent