Mike and I looked at each other, shrugged our shoulders, and shook our heads in unison.

迈克和我面面相觑，一起耸了耸肩。

But we shook our head, lying before them on the floor.

但是我们摇摇头， 躺在他们面前的地板上。

So in real life, we shake our head right like this to show that we disapprove or we can't believe something right so this is the texting form of this action.

在现实生活中，我们像这样摇头表示我们不同意或无法相信某件事情，所以这是摇头的动作的书面表达形式。

We care a lot about where you stand on an escalator, and we will tut and shake our heads if you stand in the wrong place, and I always see tourists do this.

我们很在意你站在自动扶梯上的位置，如果你站错了地方，我们会啧啧地摇头，我经常看到游客这么做。