Grocery shopping might seem like a mundane, mechanical activity, but look around next time you're in the store: Despite our best intentions, we buy food impulsively and irrationally.

在杂货店购物看似平常、机械，但下次购物时请留意你的周围：即使我们的目标再明确，我们还是会冲动并不理智地买一些食品。

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It is often used in conjunction with activity trends, which collect and store activity statistics as current observations and historical trends.

它经常用于与activity Trends连接，Activity Trends收集并存储活动统计，作为当前的观测资料和历史趋势。

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An assign activity like the extractProductName can fetch pieces from one variable, which is typically XML based content, and store it in another variable.

象extractproductname这样的赋值(assign)活动可以从一个变量中(一般是基于XML的内容)提取部分信息，然后将之保存到另一个变量中。

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