Wal-Mart, the biggest retailer, is adding to the pressures on its rivals by offering to match any Black Friday deal they offer.
最大的零售商沃尔玛，在黑色星期五特价品的比价战上，也有竞争对手的压力。
2
Either meant for everyday reading or as an introduction to sociology, this book indicates why Wal-Mart crowds act both mindfully and mindlessly on Black Friday.