Standard & Poors uses a very similar system, starting at AAA and ending at D, which indicates an issue in distress.

标准普尔使用大致相同的系统，从AAA到最后表示债券出问题的D。 。

youdao

Standard & Poors uses a very similar system, starting at AAA and ending at D, which indicates an issue in distress.

标准普尔使用大致相同的系统，从AAA到最后表示债券出问题的D。 。

youdao