单词	prevalence
释义	prevalenceprev‧a‧lence /ˈprevələns/ ●○○ noun [singular, uncountable] the fact that something is prevalentprevalence of the prevalence of deafness in older age groups
随便看	or oracle oracular oral oral contraceptive orally oral sex oral surgeon orange orangeade Orange Bowl Orange Free State Orangeman Orangemen's Day orangery orangutang oration orator oratorical oratorio oratory orb Orbison, Roy orbit orbital

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