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Harmony is an obscure and difficult musical science, but most difficult to those who are not acquainted with the Greek language; because it is necessary to use many Greek words to which there are none corresponding in Latin.
和声是一门晦涩难懂的音乐科学，但对那些不懂希腊语的人来说是最难的。因为有必要使用许多在拉丁语中没有对应词的希腊语单词。