U字開頭的單詞或詞組
undulationunfashionableunlearnedupriseunbendinguncompletedunmappedUSIAupturnedunresponsiveunaccompanieduncoupleunrecoverableundisciplinedubertyup to no gooduseaunmanageableundilutedunite withuncoilUsdaunrollunpunishedunknown characterunderpayumpteenunrecoverable errorunboundedunscripteduniversal timeunexaminedunscatheduterineungainlyunderpressureunalienableunbeatenunder one's breathunknowingutility companyunderside



















