mephedrone
noun [ U ] uk/ˈmef.ə.drəʊn/ us/ˈmef.ə.droʊn/
(UK informal also miaow miaow)（在许多国家属非法的毒品）甲氧麻黄酮
a drug, illegal in many countries, that is a stimulant (= a substance that makes the mind or body more active)
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