污垢

• It traps dirt and other matter and keeps insects out
  它阻挡污垢和其它东西，阻止昆虫进入。
• How can i get the dirt off the walls
  我怎样才能把墙上的污垢去掉呢
• Flush dirt and scale from supply pipe
  从供应管道内冲刷污垢和水垢。
• Dirt glitter when the sun happen to shine
  太阳照耀下，污垢也闪光。
• Ask the hour maid servant to ash the dirt off the floor
  叫那个女钟点工把地板上的污垢擦掉。
• After his work on the car his hands were besmeared with dirt
  修完汽车后，他手上沾满了污垢。
• Development of a measure system for the fouling thermal resistance
  污垢热阻的监测系统装置开发
• There is a ring of scum in the washbasin
  这个脸盆内有一圈污垢。
• It traps dirt , and other matter and keeps insects out
  它裹住污垢和其他东西，并将昆虫挡在外面。