这位音乐学家研究了非洲鼓乐的历史发展。
The ___musicologist studied the historical development of African drum music.
这些音乐学家正在研究贝多芬交响乐的结构。
The ___musicologists are studying the structure of Beethoven's symphonies.
这位音乐学家正在研究中国传统音乐的演变。
The ___musicologist is researching the evolution of traditional Chinese music.
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