background

background
noun

[in sing.]the area or scenery behind the main object of contemplation, especially when perceived as a framework for it
背景
the house stands against a background of sheltering trees.
这房子以一片树荫为背景。
■the part of a picture or design that serves as a setting to the main figures or objects, or appears furthest from the viewer
（画或设计的）后景；背景
the background shows a landscape of domes and minarets.
背景展现的是一些半球形的建筑物和清真寺的光塔。
the word is written in white on a red background.
该字用白颜色写在红底上。
■a position or function which is not prominent or conspicuous
幕后；隐蔽的地位，不抛头露面
after that evening, she remained in the background.
那晚之后，她就一直退居幕后。
the general scene, surroundings, or circumstances
背景情况
the events occurred against a background of continuing civil war.
这些事发生在持续内战的情况下。
■a person's education, experience, and social circumstances
（学历、经历等）个人背景
she has a background in nursing.
她有过护理经验。
a mix of students from many different backgrounds.
许多不同背景的学生。
■the circumstances, facts, or events that influence, cause, or explain something
局势；背景
the political and economic background.
政治经济局势。
[as modifier]background information.
背景资料。
a persistent level of some phenomenon or process, against which particular events or measurements are distinguished, in particular
基底，本底
■(Physics)low-intensity radiation from radioisotopes present in the natural environment
(物理)本底辐射
■unwanted signals, such as noise in the reception or recording of sound
外来杂音
(Computing)used to describe tasks or processes running on a computer that do not need input from the user
(计算机)后台
programs can be left running in the background.
程序可在后台操作。
[as modifier]background processing.
后台操作。

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