decorum

n. 礼节，礼貌

decoke, decolletage, decollete, decolonization, -isation, decolonize, decolonise, decompose, decomposition, decompress, decompression, decongestant, decontaminate, decontamination, decontrol, decor, decorate, decoration, decorative, decorator, decorous, decorously, decoy, decrease, decree, decree absolute, decree nisi, decrepit, decrepitude, decry, dedicate, dedicate to, dedicated, dedication, deduce, deducible, deduct, deductible, deduction, deductive, deductively, deed,