gone downhill

• v. 变坏(每况愈下；衷退)

gone downhill的用法和样例：

例句

1. Business is going downhill.
   生意正走下坡。
2. This part of the town used to be fashionable, but it's starting to go downhill.
   该市这一地区一度很繁华，如今已江河日下。