duty

n.职责；义务；税，关税

dust-jacket, dust-sheet, dust-up, dustbin, duster, dustiness, dustman, dustpan, dusty, Dutch, Dutch auction, Dutch barn, Dutch cap, Dutch elm, Dutch oven, Dutchman, duteous, dutiable, dutiful, dutifully, duty-bound, duty-free, duvet, DV, dwarf, dwell, dwell on, dweller, dwelling, dwindle, dye, dyed-in-the-wool, dyeing, dyer, dying, dyke, dynamic, dynamically, dynamics, dynamism,