dynamics

n 1 [sing v] branch of physics dealing with movement and force 动力学; 力学. 2 [pl] (music 音) amount of or variation in loudness 力度; 力度变化.

dutifully, duty, duty-bound, duty-free, duvet, DV, dwarf, dwell, dwell on, dweller, dwelling, dwindle, dye, dyed-in-the-wool, dyeing, dyer, dying, dyke, dynamic, dynamically, dynamism, dynamite, dynamo, dynastic, dynasty, dysentery, dyslexia, dyslexic, dyspepsia, dyspeptic, E, E number, E, e, E-mail, e. g., e.g., ea, each, each other, eager,