In an open economy, however, some of the effects of the shifts in demand spill over to the rest of the world.

然而，在一个开放的经济体中，需求变化的一些影响会溢出到世界其他地区。

They thus bypass retailers while gaining access to data on consumer trends, allowing them to react quickly to shifts in demand—or, using sophisticated analytics, predict these changes and respond in advance.

因此，他们绕过零售商， 同时获得有关消费者趋势的数据，使他们能够对需求的变化做出快速反应——或者，使用复杂的分析， 预测这些变化并提前做出反应。