gradus
n. 练习曲集；韵律；辞典
n. （Gradus）人名；（法）格拉迪
复数 graduses
例句
Clementi's Gradus AD Parnassum is an important work in pianoforte-history.
克列门蒂的《名手之道》是钢琴艺术史上一部重要的作品。
Clementi's Gradus AD Parnassum is an important work in pianoforte - history.
