a person who works or studies too much, especially someone who learns and knows all the details about something工作狂;疯狂用功的人;(尤指某方面的)专家
As the NEC's deputy for domestic policy issues, Sperling has functioned as both policy wonk and political guru.作为国家经济委员会负责对内政策的副主席,斯珀林既是政策方面的专家又是政治方面的权威。
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