我网上下载了一个车身碰撞的模型。里面有3个key文件,一个是模型,一个是参数设置,一个是碰撞设置,我应该怎么去运行呀? read me文件里是这么写的: 1. Combine file (Combine.key) This file is used to combine the vehicle model with a barrier or another vehicle. It reads in the other files (2 and 3 below) via the *INCLUDE option. 2. Vehicle model file (YarisD_V1m.key) This file includes...