Outsourcing the role of “background actors” to inanimate objects isn't new, of course; producers have used cardboard cutouts in the past.

用无生命的物体充当“背景演员”其实并不新鲜，过去制片商就曾经用过剪纸板。

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This course, NUKE green screen Keying Fundamentals, will teach you how to complete a simple green screen shot and then composite it over a new background.

这个过程中，核绿屏键控原理，将教你如何完成一个简单的绿屏拍摄，然后组合在一个新的背景。

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This article illustrates the background of the topic research in terms of the requirement that the New Course has on math classes in the middle school and the current situation of math teaching.

本文从新课程对中学数学课堂教学的要求和中学数学教学的现状出发，阐述了本课题研究的背景。

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Looming in the background of this new report, of course, is the fact that the Hyundai and Kia brands raised suspicions about their mileage ratings across the board recently by falsifying the mileage figures for several models to nudge them above the perceptually crucial 40-mpg level.

FORBES: Consumer Reports Zings Ford Over Hybrid Mileage Ratings

New competitors like Huawei have a background in networks (as did Nokia of course and as does Samsung) and not surprisingly are looking to maximize phone performance from a network standpoint.

FORBES: What To Like About The Galaxy S4 Compared To The iPhone