| 单词 | gradus |
| 释义 | Word Frequency gradus(ˈɡreɪdəs) nounWord forms: plural -duses 1. a book of études or other musical exercises arranged in order of increasing difficulty 2. prosody a dictionary or textbook of prosody for use in writing Latin or Greek verse Word origin C18: shortened from Latin Gradus ad Parnassum a step towards Parnassus, a dictionary of prosody used in the 18th and 19th centuries |
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