英语词汇“tracking poll”是什么意思，“tracking poll”的读音、用法及例句翻译-烛光网

词汇	tracking poll
释义	tracking polln.（名词） An opinion poll in which the same sample, such as a small number of voters, is questioned periodically to measure shifts in opinion.跟踪民意测验：一种民意测验方式，定期对同一取样组，如少量的选民，进行询问以测出意见的变化
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