abstraction [æbˈstrækʃən, əb-]

例句:

• "Third World" is an abstraction, a form of shorthand.
  “第三世界”是个抽象概念，是一种简称。
  
• Andrew noticed her abstraction and asked, "What's bothering you?"
  安德鲁注意到她在愣神，便问道：“你怎么啦？”
  
• water abstraction from rivers
  从河流中抽取水
  
• To him, a family was almost an abstraction.
  来自THETIMES
• What would have been the geopolitical uses of abstraction?
  来自NEWYORKER
• The abstraction is a little less abstract, no?
  来自NEWYORKER