名詞 back ground:

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

動詞 back ground:

1. understate the importance or quality of
   同義詞：background, play down, downplay