librationalWiktionary 原文英美构词拆解librationlibration词干al-al后缀-alOf 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 libration + -al.释义形容词adjective1Of or pertaining to libration