graded down

• 压低等级

graded down的用法和样例：

例句

1. She grade down her buying when uncertain about one's future.
   由于前途未卜她因而减少购买数量。
2. The road is no longer fit for heavy traffic, and will be finally graded down.
   这条公路不适应繁忙的交通，最终会被降低级别。