For example, a film-maker might opt to include the background sound of an ambulance's siren while the foreground sound and image portrays an arguing couple.
例如，电影制作人可能会选择在背景中加入救护车的警笛声，而在前景的声音和图像中表现一对争吵的夫妇。
2
By blurring objects in the foreground, background or by blurring the entire design, you can dramatically increase the impact of your project.
通过模糊前景、模糊背景，甚至整个设计，你可以动态地增加你的项目的冲击力。
3
Third-party products can provide additional functionality, such as a "theme" that enlarges fonts system-wide or one that provides high contrast between background and foreground.