eugenicalWiktionary 原文构词拆分eugenic词根/词干+-al后缀Of or pertaining to. Adjectival suffix appended to various words, often nouns, to produce an adjective form. Often added to words of Latin origin, but used with other words also. · Forming nouns, especially of verbal action.词源说明From eugenic + -al.释义（英文）形容词 Adjective(dated) Relating to eugenics.