If you think someone is pedantic, you mean that they are too concerned with unimportant details or traditional rules, especially in connection with academic subjects.
例句
His lecture was so pedantic and uninteresting.他的讲座学究气太浓，没意思。
英汉词典释义
adj.
卖弄学问的
a pedantic use of long words用字母多的单词卖弄学问He is learned, but neither stuffy nor pedantic.他很博学,但既不妄自尊大也不卖弄学问。
学究式的,迂腐的
英英词典释义
Adjective
1. marked by a narrow focus on or display of learning especially its trivial aspects