[mass noun]the state or fact of being of great significance or value 重要性,重要价值 the importance of democracy. 民主的重要性。 [count noun]the relative importances of the external and internal causes. 内因外因的相对重要性。
常用词组 full of one's own importance
having a very high opinion of oneself; self-important 狂妄自大的,自视甚高的
语源
early 16th cent.: from French, from medieval Latin importantia, from important- 'being of consequence', from the verb importare (see import)