以零售商为例，他可以决定啤酒库存量是多少。这不仅仅基于过去的销售记录，还可以基于天气预报，社会媒体上的聚会闲聊以及体育比赛的时间表。
A retailer, for instance, might decide how much beer to stock based not just on previous sales records, but also on weather forecasts, party chatter on social media and schedules for sports matches.
这会给市场增加相当于1.35年房屋销售量的存量房。
That could add 1.35 years' worth of inventory to the market.
预售屋销售价格中值比上年同期下跌9.1%，预售屋存量减少了7.3%。
The median new-home price fell 9.1% from a year earlier and inventories narrowed by 7.3%.
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