background

• n.
  • a person's social heritage: previous experience or training

    "he is a lawyer with a sports background"

  • the part of a scene (or picture) that lies behind objects in the foreground

    "he posed her against a background of rolling hills"

    同义词： ground

  • information that is essential to understanding a situation or problem

    "the embassy filled him in on the background of the incident"

    同义词： background knowledge

  • extraneous signals that can be confused with the phenomenon to be observed or measured

    "they got a bad connection and could hardly hear one another over the background signals"

    同义词： background signal

  • relatively unimportant or inconspicuous accompanying situation

    "when the rain came he could hear the sound of thunder in the background"

  • the state of the environment in which a situation exists

    同义词： setting scope

  • (computer science) the area of the screen in graphical user interfaces against which icons and windows appear

    同义词： desktop screen background

  • scenery hung at back of stage

    同义词： backdrop backcloth

• v. understate the importance or quality of

  同义词： play down downplay

以上来源于: WordNet