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@1512443343 跟着小鱼教程重装一下ros2解决了，具体什么原因我也不知道
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@小鱼 鱼哥，我用的是humble版本，跟着教程做的，用ros2 node list 输出只有gazebo ，运行指令ros2 topic list 输出没有/cmd_vel和/odom