| 单词 | tracking poll |
| 释义 | tracking poll tracking poll n.（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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