Whenyougointoastoreorasupermarket,youcanalwayshearthatm...
问题详情：Whenyougointoastoreorasupermarket,youcanalwayshearthatmusicisplaying.Wecallit“backgroundmusic”or“Muzak”.Itisespecialdesignedtorelaxyou,ortogiveyourextraenergy.Sometimesyoudon’tevenrealize...