“speculative grade”简单造句，speculative grade造句子

Debts where default is a possibility are rated speculative grade (better, and more aptly at this point, known as "junk") by the rating agencies.

Moody's then has three non-Prime or speculative grade ratings, divided again into 11 subsidiary levels, from Ba1 to C. Standard & Poors uses a very similar system, starting at AAA and ending at D, which indicates an issue in distress.