可以将购物车的压缩视图作为挨着选项卡的一个侧栏添加进来，并在过程中完成每个步骤后对之进行更新。
You could add a compact view of the cart as a sidebar next to your tabs and update it with each completed step in the process.
一个购物车，看起来像是一个……购物栏。
一个典型的购物车会显示用户浏览站点时加入的产品列表，可以改变数量的输入栏，结帐按钮等等。
A typical shopping cart shows a list of products that the user added to it while browsing the site, input fields to update quantities, buttons to proceed to checkout, and such.
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