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	do dinner/lunch do dis do do cam do down do duty as do for do for a living do grocery shopping do in do interviews do island do it do justice do justice to do lunch do me a favor do more harm than good do naph do nicely do nicely for oneself do no service do no such thing do no wrong do not mix do nothing for

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