Only bonds backed by the U.S. government were downgraded, and the vast majority of those were defeased bonds (bonds escrowed by U.S. government debt because they were refunded).
FORBES: Where Are the Municipal Bankruptcies?
英汉双解词典包含3185865条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。