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