position 位置,Pollution污染,penetration穿透,perforation孔,pacification 和平,paction 契约,presumtion 专横,population 人口,perfection 完美 excution,elevation,emotion,emigration,equation,estimation,evaporation,evolution,exaggeration,examinatiom,exploration.explanationalienation n.异化alternation n.改变,变更assassination n.暗杀combination n.混合,组合condemnation n.谴责,判决destination n.终点,目的地donation n.捐献explanation n.说明,imagination n.想象力,想象inclination n.倾斜,倾向intonation n.语调,声调nation n.国家,国民,民族stagnation n.停滞