green screen
noun [ C or U ] uk/ˈɡriːn ˌskriːn/ us/ˈɡriːn ˌskriːn/
（电影或电视节目制作中，用于替换背景的）绿屏，绿幕;使用绿屏，使用绿幕
a green surface used as a background when making a film or television programme, so that any image can replace the screen behind the actors; the use of this method in filming
The video was filmed entirely in front of a green screen over the course of one day. 该视频完全是在绿屏前拍摄的，历时一天。
Actors now are used to working with green screen, and it's a big part of what we do. 演员们现在已经习惯了与绿屏合作，这也是我们工作的一个重要部分。
- More examples
- She sat for each self-portrait in front of a green screen, then digitally inserted the different settings.
- Green screens and special effects have taken jobs from stunt doubles.
- In those days there was no CGI, no green screen, no 3D.
- It was a cheap remake filmed entirely on green screen.
- The green screen work in the show is pretty dreadful.