他们当时在大演播厅里表演合奏，开演前格林告诉音响室里的技师将扬声器声音调低。
The duo performance took place in the big showroom. Before starting, Green told the sound booth technician to turn the speaker volume way down.
他们当时在大演播厅里表演合奏，开演前格林告诉音响室里的技师将扬声器声音调低。
The duo performance took place in the big showroom. Before starting, Green told the sound booth technician to turn the speaker volume way down.
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