词根词缀:-ity
【来源及含义】Latin: suffix used to form abstract nouns expressing act, state, quality, property, or condition corresponding to an adjective
【同源单词】abnormality, absorbability, acclivity, acerbity, acridity, acrity
词根词缀:numer-, number-
【来源及含义】Latin: distribution; to count, to reckon
【同源单词】alphanumeric, alphanumerical, alphanumerics, annumerate, annumeration, apocalyptic number