principal investigator[释义]首席调查员;[例句]He was as delighted to participate in the real-time learning episode as if he were a fellow principal investigator.他很愉快地参加了饥乱斗实时获悉情况进展的活动，就好象他烂磨也是一位首席研陪物究员似的。
标签：principal,investigator
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