首字母 a b c d e f g h i j k l m n o p q r s t u v w x y z

u开头的英语单词、第一个字母是u的英语词组有哪些

unbreakable used to doing sth used to do sth untrue unmarried unsure unprotected unnecessarily uncross upsetting under the umbrella of unusable untreated unsafe unexplained up close upwards unintentionally unfaithful undamaged up to somebody unclear uncontrolled under repair unsteady unpunished unloving ultrared ultrasonic umbilicus unavoidable unicellular unfeasible unintelligible uppermost uranium urea uremia ureter urethra uretic urinary urinate urology urticaria uteritis uvula uterus United States underpass Ulyanovsk undeclared undeniable unutterable unreasoning uniquely unsmiling unhurt Utah unimaginative unscrew unrealistic unpack underclothes unsympathetic unforeseen unacceptable unshakable uncrumpled unrelenting undoing user-friendly underside unduly uncalled-for undercharge undue upkeep uprising under favorable conditions urban sprawl Upper World unaided eye unbound hair under construction under pressure usher in ultimatum unanimity unattended unblemished unfettered unruly unveil upbringing uproot urbane undervalue UN unfavourable untenable unconditioned undersigned unclean undermentioned unfairly unplug under no circumstances under fire under the weather up against up in the air up to scratch up to the minute user utilise ultimately uniformly universally unstable unlock unnatural unparalleled unreasonable unsatisfactory unsuccessful unsuitable untie unyielding unworthy uplift upside upside-down urbanize urgency urine urn usher utilization utterance utterly uttermost ultraviolet unbiased uncertainty unconventional underbrush undernourished undertaking underwriter undisturbed undone undoubted undoubtedly undress uneconomical uneven unemployed unfavorable unintentional United Kingdom United Nations unlawful unlicensed unlike unlikely unlimited undo united unity utility under the circumstances under way under control uncover up to date underestimate underlie uneasy up and down understood upper-left used to do sth. uncertain uninhabited unrest unconditional unwary unbearable unjust unwilling under the name of uncomfortably unfit underwear update Uluru upside down Uganda up to now