单词	tradevman
释义	tradevman noun tra·​dev·​man trəˈdevmən plural tradevmen : a petty officer in the U.S. Navy who installs, operates, maintains, and repairs training devices used especially in gunnery, aviation, and electronics instruction Word History Etymology training devices man
随便看	economized economizer economizers economizes economizing economy economy coil economy of scale econuts ecophene ecophenotype ecophysiological ecophysiologies ecophysiology ecorches ecorticate ecosocs ecospecies ecospecific ecosphere ecospheres ecossaise ecossaises ecostate ecosystem

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