to practise something, for example a performance, without an audience being present

Let's just walk through the scene one more time. 我们再排练一次吧。

to slowly and carefully explain something to someone or show someone how to do something

She walked me through the six-page document. 她耐心地给我解释了一遍这份长达6页的文件。

He'll walk you through the procedure. 他会详细地给你演示操作程序的。