paleness [ˈpelnɪs]

例句:

• A paleness overspread her face.
  她脸色一阵苍白.
  
• Symptoms include tiredness, paleness, and lethargy.
  症状包括疲倦、脸色苍白、没有精神。
  
• Symptoms are unusual paleness and tiredness.
  症状是异常的苍白和疲劳.
  
• There may be symptoms of an infection - such as a fever, headache, sore throat, anaemia, tiredness and paleness.
  来自BBC