n. 1.后景，背景；基本情况；(纺织品等的)底子；出身；经历。 2.隐蔽的[不引人注目的]地位；幕后。 3.衬托音乐，伴音；【无线电】干扰杂音 (students of workers' background. 工人出身的学生)。 短语和例子 in the background 背地下，背后；在幕后(活动)。
scenery hung at back of stage 同义词：backdrop, backcloth,
(computer science) the area of the screen in graphical user interfaces against which icons and windows appear 同义词：desktop, screen background,
a person''s social heritage: previous experience or training; "he is a lawyer with a sports background"
information that is essential to understanding a situation or problem; "the embassy filled him in on the background of the incident" 同义词：background knowledge,
the part of a scene (or picture) that lies behind objects in the foreground; "he posed her against a background of rolling hills" 同义词：ground,
relatively unimportant or inconspicuous accompanying situation; "when the rain came he could hear the sound of thunder in the background"
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" 同义词：background signal,
the state of the environment in which a situation exists; "you can''t do that in a university setting" 同义词：setting, scope,
understate the importance or quality of; "he played down his royal ancestry" 同义词：play down, downplay,
例句与用法
1.
Your background is entirely implausible . 你的背景简直令人难以相信。
2.
Not much is known about his background . 关于他的背景所知不多。
3.
There is now a background of experimental date . 现在已有实验资料作依据。
4.
Little is known about the historical background 历史情况不详。
5.
He kept discreetly in the background . 他一直谨慎地躲在幕后。
6.
They scrutinized his pedigree and background . 他们详细审查了他的家系和背景。
7.
This entire two-day deal is for background . 这两天的安排完全是为了介绍背景。
8.
They were pictured against a background of flowers . 他们在画中背景有很多花。
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