单词	orthocenter
释义	orthocenter noun or·​tho·​cen·​ter ˈȯr-thə-ˌsen-tər  : the common intersection of the three altitudes of a triangle or their extensions or of the several altitudes of a polyhedron provided these latter exist and meet in a point Word History Etymology International Scientific Vocabulary First Known Use 1866, in the meaning defined above
随便看	cytosol cytosolic cytosols cytosomes Cytospora Cytosporina cytostatic cytostatics cytostomal cytostomes cytotaxonomic cytotaxonomically cytotaxonomies cytotaxonomist cytotaxonomists cytotaxonomy cytotechnologies cytotechnologist cytotechnologists cytotechnology cytotoxic cytotoxic T cell cytotoxic t cells cytotoxic t lymphocyte cytotoxic t lymphocytes

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