classes [klɑ:sɪz]

例句:

• Babearth regarded the middle classes as the betrayers of the Revolution.
  巴博施把中产阶级看作是革命的叛徒。
  
• Radical feminism is currently the fashionable topic among the chattering classes.
  激进的女权主义是时下名嘴阶层热议的话题。
  
• Support for monogamy and marriage was strongest among the professional classes.
  专业人士阶层最支持一夫一妻制。
  
• This is why there are science classes in schools.
  来自SA
• We have free literacy classes at the public library!
  来自SA
• There are even classes in first aid and CPR.
  来自WSJ