They also keep their hands visible at the table and their elbows off the table.
他们也会把自己的手放在桌子上,肘部离开桌子。
Sometimes this can involve a substantial rework of the back end, but it will generally be pretty easy to keep the user-visible front end stable.
有时候,这可能需要对后端进行实质性的重构,但是在一般情况下用户看到的前端可以保持稳定。
Keep the shopping cart visible: Your new Ajax interface shows users their shopping carts only at the beginning and end of the process.
让购物车可见:新的Ajax界面只在过程的开始和结束部分显示用户的购物车。
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