40.the symptorn is all control buttons inoperative. The symptorn is printing paper alwys squeezed.

故障现象是各功能键失效。故障现象是总夹纸。

And how to make the bath keep warm is you press these control buttons and it stays warm.

怎样让温度一直保持呢？按这些按钮就好了，它会一直保持温暖。

And they all have these control buttons that are fixed in plastic and are the same for every application.

而且这些控制按钮都是固定在塑料里，对于每个应用程序来说都是固定不变的。

His house chair had a control button that elevated his seat so that he could address people at head height.

他家的椅子有一个控制按钮，可以升高他的座位，这样他就可以在头部高度与人交谈。