downgrade [ˈdaʊnˌɡred]

例句:

• We don't want to do anything that would precipitate a downgrade.
  我们不想做任何会导致评级下调的事情.
  
• This assessment could well result in a rating downgrade.
  这项评估很可能导致评级下调.
  
• Continuous long and steep downgrade sections are often hazardous locations.
  连续长大下坡路段往往是重特大恶性交通事故多发段.
  
• This week we look at the Moody's downgrade.
  来自THETIMES
• Politically, the downgrade could be much more significant.
  来自BBC
• He blamed out-of-control federal spending for the credit downgrade.
  来自VOA
• She was downgraded to assistant manager.
  她被降职为经理助理。
  来自《权威词典》