单词	roughen
释义	roughen /ˈrʌf(ə)n / verb Make or become rough: [with object]: the wind was roughening the surface of the river [no object]: his voice roughened... The coarser the powder, the more the grains roughen up the surface for more of a textured finish. Virginia's voice had roughened to an angry growl. Etching the parts roughens the surface for better mechanical adhesion of the EN to the magnesium. Rhymes toughen
随便看	Titicaca, Lake titihoya titillate titillating titillatingly titillation titi monkey titivate titivation titlark title title bar titled drug maker drug man drug manufacturer drug money drug mule drug pusher drug-pushing drug rash drug-related drug resistance drug-resistant drug-resisting

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