名詞 background:

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

動詞 background:

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

1. It is wrong to differentiate between people according to their family background.
   根據(jù)出身不同而區(qū)別待人是不對的。
2. She came from a privileged background.
   她出身於特權(quán)階層。
3. With my working-class background I feel like a fish out of water among these high-society people.
   我出身於工人階級，在上流社會中感到很不自在。
4. He had the idea of shooting them against a complete plain white background.
   他有個主意，以純白為背景給他們拍攝。
5. He has a working-class background.
   他是工人階級出身。
6. He stayed in the background to escape from the public attention.
   他呆在幕后為了避開公眾的注意。

back.ground

n.Abbr. bg.,bkgd.（名詞）縮寫 bg.,bkgd.
The ground or scenery located behind something.
背景：位于某物后面的場地或景色

The part of a pictorial representation that appears as if it were in the distance and that provides relief for the principal objects in the foreground.
遠(yuǎn)景：繪畫表現(xiàn)的構(gòu)成部分，看起來似乎在遠(yuǎn)處，為使在前景的主要物體形象更突出
The general scene or surface against which designs, patterns, or figures are represented or viewed.
底子，底色：大致的風(fēng)景或外觀，圖案、式樣或形象以此為背景來描繪或展現(xiàn)
A position or an area of relative inconspicuousness or unimportance.
不重要的地方：相對來說不顯著或不重要的位置或地區(qū)
The circumstances and events surrounding or leading up to an event or occurrence.
背景資料：圍繞或?qū)е履撤N事件或事變發(fā)生的情況或事件
A person`s experience, training, and education:
閱歷：某人的經(jīng)驗、訓(xùn)練和教育狀況：
例句：
Her background in the arts is impressive.
他在藝術(shù)上的閱歷令人難忘

Subdued music played especially as an accompaniment to dialogue in a dramatic performance.
配樂：在戲劇演出中特別為對話伴奏的低緩柔和的音樂
Sound or radiation present at a relatively constant low level at a specific location.
背景音樂，基底：在某個特定的位置以一個相對穩(wěn)定的低水平表現(xiàn)出來的聲音或傳播

【引伸】
back.ground.
v.（動詞）