单词	tracing wheel
释义	tracing wheel noun : a usually toothed wheel with a handle that is used on tracing paper to trace a pattern Word History First Known Use circa 1891, in the meaning defined above
随便看	norming normings normo- normosplanchnic normotensive normotensives normothermia normothermias normothermic norms Norn nornicotine norns norovirus norplants Norris Norristown Norrköping Norroy norroy and ulster Norroy and Ulster King of Arms Norroy King of Arms nors island national monument Norse Norse-American

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