activeworlds是一个虚拟社区仿真平台的引擎，作出产品类似于secondlife，这是它的类库。

通仿真,能以真实城市交通道路为基本,结合街道,绿化,车辆等交通设施的三维虚拟仿真效果,使用户沉浸于虚拟城市交通之中,借助vr技术,优化交通系统(Through simulation, we can take the real city traffic road as the basic, combine the three-dimensional virtual simulation effect of the traffic facilities such as streets, greeni