第二，用户可以添加商品到购物车中并查看购物车中商品的总价。

Second, the user can add items to the shopping cart and see the total cost of items in the cart.

youdao

您应该能够“阅读”图书的封底内容，查看图书的前言，查看封面图片，以及轻松地(且愉快地)将书放入您的购物车并购买。

You should be able to "read" the back cover of the book, check out the book flap, see the cover art, and easily (and impulsively) drop the book in your cart and wander to the checkout line.

youdao

购物车需要确保顾客不能自己定价，而且顾客不能查看有关其他顾客的信息等等。

A shopping cart needs to make sure that customers can't pick their own prices, that customers can't see information about other customers, and so on.

youdao