Uber is finally profitable and a major rating agency downgraded its US debt rating.
Uber终于实现盈利， 一家主要评级机构下调了其美国债务评级。
英语百科
Bond credit rating
（重定向自Debt rating）
In investment, the bond credit rating represents the credit worthiness of corporate or government bonds. It is not to be confused with an individual's credit score. The ratings are published by credit rating agencies and used by investment professionals to assess the likelihood the debt will be repaid.