U字開(kāi)頭的單詞或詞組
unrivaledunit costundividedunimpressedunderdevelopedunderwritingunconstrainedundulyupdate informationunderdounwittingunilateralumbraunwieldyunforeseenup runUDPGunit typeunhingeunanimityUTPuncookedundernourishunwrittenupper jawunorthodoxunfurlulteriorunder the pressure ofunmarriedUlan Batorunmeeturinary bladderunitary stateunforgivableunfreezeunderwriterunthinkableundernourishedunderpinningunstatedultra-