Mark Kleiman teaches public policy at the University of California, Los Angeles; he has written influentially about drug policy for a couple of decades.

马克·克雷曼在加州大学洛杉矶分校执教公共政策；几十年来，他已就毒品政策发表了多部有影响力的著作。

youdao

Mark Kleiman teaches public policy at the University of California, Los Angeles; he has written influentially about drug policy for a couple of decades.

马克·克雷曼在加州大学洛杉矶分校执教公共政策；几十年来，他已就毒品政策发表了多部有影响力的著作。

youdao