- 问题详情:Whenyougointoastoreorasupermarket,youcanalwayshearthatmusicisplaying.Wecallit“backgroundmusic”or“Muzak”.Itisespecialdesignedtorelaxyou,ortogiveyourextraenergy.Sometimesyoudon’tevenrealizeitisplaying,oryoureacttothemusicanyway.Muzakmakesp...
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