说明：  Three-dimensional real-time graphics are a prevalent technology nowadays, thanks to the steady rise of processing power and specialized graphics hardware. One of the goals of computer graphics most sought after and difficult to achieve is to reproduce realistic outdoor environments featuring dense forests.
(Three-dimensional real-time graphics are a prevalent technology nowadays, thanksto the steady rise of processing power and specialized graphics hardware. One of thegoals of computer graphics most sought after and difficult to achieve is to reproduce realistic outdoor environments featuring dense forests.)