adult

a.成年人的；已成熟的 n.成年人

adoration, adore, adoring, adoringly, adorn, adornment, adrenal, adrenal gland, adrenalin, adrift, adroit, adroitly, adroitness, adsorb, adsorbent, adsorption, ADT, adulate, adulation, adulatory, adulterate, adulterated, adulteration, adulterer, adulterous, adultery, adulthood, adumbrate, adumbration, adv., advance, advance payment, advanced, advancement, advantage, advantageous, advantageously, advent, Adventist, adventitious,