| 单词 | polestar | 
| 释义 | polestarnoun  pole·star  ˈpōl-ˌstär  1   : north star   2  a    : a directing principle : guide    b    : a center of attraction   polestar nounas in compassa guiding or motivating purpose or principle under the polestar of progress, urban renewal programs gutted the historic districts of many cities Synonyms & Similar Words Relevance 
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