单词	abundant number
释义	abundant number noun : an imperfect number that is less than the sum of all its divisors (as 12) Word History First Known Use 1730, in the meaning defined above
随便看	hygienicest hygienics hygienise hygienises hygienist hygienists hygienized hygienizeed hygienizeing hygienizes hygienizing hygr- hygristors hygro- hygrocybes hygrodeik hygrodeiks hygroexpansivity hygrograph hygrographs hygrology hygrometer hygrometers hygrometric hygrometric water

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