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Meccan, Meccano, Me-CCNU, mech, mechanic, mechanical, mechanical advantage, mechanical device, mechanical drawing, mechanical energy,

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挂钩架, 挂号, 挂号处, 挂号柜台, 挂号投递, 挂号信, 挂号邮寄, 挂花, 挂虑, 挂满旗,