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我跟着小鱼大佬b站的新课看的，我输出来命令之后只有两个大概的类型，但是视频里有很多的参数，这是为啥，是ros的版本不一样的原因吗。我用的是foxy
@yeyeye 这个是嵌套消息，这里面的结果每一个都是一个消息接口，要展开来看
ros2 interface proto xxx
