The user is guided, quite intentionally, from product selection through purchase.

从产品选择到购买，用户都会在特意的引导下进行。

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Select a product from the returned selection list, then select a component from the next selection list that appears.

从返回的选择列表中选择产品，然后从出现的下一个选择列表中选择组件。

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Please include a selection of screen shots from the product that illustrate how WHO classifications is used in the product.

请包含一组显世卫组织分类在产品应用中的屏幕截图。

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With more than 40 product categories from used books to gourmet food, it manages to offer customers selection and simplicity.

FORBES: 2. Convenience