dirtier

例句:

• London seems so much dirtier than everywhere else.
  伦敦看起来比其他任何地方都脏得多。
  
• My hands are dirtier than yours!
  “我的手比你的手脏. ”
  
• The landscape will get more cluttered, the air and water even dirtier.
  风景之地将会更加狼藉不堪, 空气和水将会变得更脏.
  
• China has been closing older, dirtier coal-burning power plants.
  来自VOA
• It's just that some ways are much MUCH dirtier than others.
  来自SA
• But it provides a lesson for some of the dirtier cities in the region.
  来自CNN