安装可再发行的合并模块和一组图形。
Installs redistributable merge modules and a set of graphics.
当一组特定的静态图像，例如几何图形，以指定的频率切换，便会产生某种动态图片的效果。
When a number of certain static images, such as geometric figures, for example, interchange with a specified frequency, it creates something like a motion picture effect.
graphicsenvironment类中保存了图形对象和一组颜色，还包括宽度和高度。
The GraphicsEnvironment class holds the graphics object and a set of colors. It also contains the width and height.
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