graded maturities

例句：

1. 1. The company's bond ratings are graded maturities that reflect its financial health.
   该公司债券的评级是分级的到期期限，反映了其财务状况。
2. 2.The bank's credit rating is based on the graded maturities of its loans.
   银行的信用评级是基于其贷款的分级到期期限。
3. 3. The government has introduced a new system to grade maturities for bonds issued by state-owned enterprises.
   政府已经引入了一种新的系统，对国有企业发行的债券进行分级到期期限。