解决方法：
在 vscode 的 settings.json 里面加一条

    "terminal.integrated.inheritEnv": false,

发现在 Vscode 终端 which pip 跟 echo $PATH 打印的都不对

(vir_env_conda) usr@lab:/mnt/data1/$ echo $PATH
/home/usr/.local/bin:/opt/ros/noetic/bin:/usr/local/cuda-11.6/bin:/mnt/data1/anaconda3/envs/vir_env_conda/bin:/mnt/data1/anaconda3/condabin:/home/usr/.local/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin:/home/usr/.local/bin:/usr/local/cuda-11.6/targets/x86_64-linux/include:/home/usr/.local/bin:/home/usr/.local/bin:/usr/local/cuda-11.6/bin:/home/usr/.local/bin:/opt/ros/noetic/bin:/usr/local/cuda-11.6/bin:/mnt/data1/anaconda3/envs/vir_env_conda/bin:/mnt/data1/anaconda3/condabin:/home/usr/.local/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin:/home/usr/.local/bin:/usr/local/cuda-11.6/targets/x86_64-linux/include:/home/usr/.local/bin:/home/usr/.local/bin:/usr/local/cuda-11.6/bin:/mnt/data1/anaconda3/condabin:/home/usr/.local/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin:/home/usr/.local/bin```


```bash
(vir_env_conda) usr@lab:/mnt/data1/experiment$ which python
/mnt/data1/anaconda3/envs/vir_env_conda/bin/python
(vir_env_conda) usr@lab:/mnt/data1/experiment$ which pip
/home/usr/.local/bin/pip