didactic

adj. 教诲的、说教的

dichotomy, dick, dickens, Dickensian, dicker, dicky, dicky (also dickey), dicky-bird, dicotyledon, Dictaphone, dictate, dictation, dictator, dictatorial, dictatorially, dictatorship, diction, dictionary, dictum, did, didactically, diddle, didn't, die, die away, die down, die for, die from, die game, die of, die of illness, die off, die out, die to the world, die-cast, die-hard, diehard, dieresis, diesel, diesel-electric,