他们不但做了音乐表演，而且简短地介绍了西方铜管乐器的历史。
Not only did they present a musical performance, but they also gave a brief introduction to the history of Western brass instruments.
他们不但做了音乐表演，而且简短地介绍了西方铜管乐器的历史。
Not only did they present a musical performance, but they also gave a brief introduction to the history of Western brass instruments.
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