单词	hectograph
释义	hectograph noun hec·​to·​graph ˈhek-tə-ˌgraf  : a machine for making copies of a writing or drawing produced on a gelatin surface hectograph transitive verb Word History Etymology German Hektograph, from hekto- hect- + -graph -graph First Known Use 1880, in the meaning defined above
随便看	empty-cell process empty-cell treatment empty-handed empty-headed empty-hearted empty-nest syndrome emptying Hartung Hartwell harum-scarum harumphed harumphing harumphs haruspex haruspical haruspicated haruspicates haruspicating haruspication haruspications haruspices haruspicies haruspicy Harvard Harvard beets

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