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单词 rub up
释义

rub up

verb

rubbed up; rubbing up; rubs up

transitive verb

1
: to revive or refresh knowledge of : recall
2
: to improve the keenness of (a mental faculty)

Word History

First Known Use

circa 1571, in the meaning defined at sense 1

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更新时间:2024/9/22 15:27:13