background
英 ['bækgraʊnd]
美['bækɡraʊnd]
	    - n. 背景;隐蔽的位置
 - vt. 作…的背景
 - adj. 背景的;发布背景材料的
 
英英释意
- 1. a person's social heritage: previous experience or training;
 - "he is a lawyer with a sports background"
 
- 2. the part of a scene (or picture) that lies behind objects in the foreground;
 - "he posed her against a background of rolling hills"
 
- 3. information that is essential to understanding a situation or problem;
 - "the embassy filled him in on the background of the incident"
 
- 4. 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"
 
- 5. relatively unimportant or inconspicuous accompanying situation;
 - "when the rain came he could hear the sound of thunder in the background"
 
- 6. the state of the environment in which a situation exists;
 - "you can't do that in a university setting"
 
- 7. (computer science) the area of the screen in graphical user interfaces against which icons and windows appear
 
- 8. scenery hung at back of stage