词根词缀：genus, genesis-, -gen, -gene, -genesis, -genetic, -genic, -geny, -genous

【来源及含义】Latin: birth, beget; descent, origin, creation, inception, beginning, race, sort; kind, class

【同源单词】aerospace engineering, agenesis, autogenous, benign, benignant, benignantly

词根词缀：sign-

【来源及含义】Latin: mark, token, indication; a fact, a condition, or a quality

【同源单词】assign, assignable, assignably, assignation, assignee, assigner