While human achievements in mathematics continue to reach new levels of complexity, many of us who aren't mathematicians at heartor engineers by trad may struggle to remember the last time we used calculus.
2018年12月六级真题（第二套）阅读 Section C
柯林斯高阶英汉双解学习词典释义
N-UNCOUNT
(基于 20 世纪 20 年代爵士乐的)传统爵士乐
Trad or trad jazz is a kind of jazz based on the jazz that was played in the 1920s.