utilitarian

a.实用的

uselessness, user, user-friendly, usher, usherette, USN, USS, USSR, usual, usually, usurer, usurp, usurpation, usurper, usury, Utah, utensil, uterine, uterus, utilise, utility, utility room, utilization, utilization, utilisation, utilize, utilize, utilise, utmost, Utopia, Utopian, utter, utterance, utterly, uttermost, uvula, V, V (also v), V and A, V, v, v.=inquire, vac,