back ground

名词 back ground:

1. a person's social heritage: previous experience or training
   同义词：background
2. the part of a scene (or picture) that lies behind objects in the foreground
   同义词：background, ground
3. information that is essential to understanding a situation or problem
   同义词：background, background knowledge
4. extraneous signals that can be confused with the phenomenon to be observed or measured
   同义词：background, background signal
5. relatively unimportant or inconspicuous accompanying situation
   同义词：background
6. the state of the environment in which a situation exists
   同义词：setting, background, scope
7. (computer science) the area of the screen in graphical user interfaces against which icons and windows appear
   同义词：background, desktop, screen background
8. scenery hung at back of stage
   同义词：backdrop, background, backcloth

动词 back ground:

1. understate the importance or quality of
   同义词：background, play down, downplay