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	Murdoch murdrum mure mured murein mureins murena Murena murenger Mures mures murex murexan murexes murexide reaction murexide test Murfreesboro murgeon murgeoned murgeoning murgeons Muria murias muriate muriate of potash

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