非常容易找到想要的商品，并且可以生成自己的商品订单列表

The usability is good, though: it is very easy to search for products and stores. You can also create shopping lists.

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不过，可以设想一个生成的内容必须在给定的时间点过期作废的应用程序(比如表示特价商品或者每周排名前十的列表)。

However, imagine an application that produces entries whose content must expire at a given point in time (for example, a feed representing special sale offers or a weekly top-ten list).

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