词汇	正常
释义	正常 医normal occlusion
随便看	difference of comparative costs difference of cost difference of counting time difference of county economic level difference of creed difference of cubes difference of culture difference of depth difference of depth of modulation difference of electric potential difference of elevation difference of entropy difference of events difference of expansion stress difference of expression difference of feature difference of first order difference of focus difference of frequency difference of frustum difference of fundamental frequences Difference of Gaussian difference of gender difference of genders difference of growth