The experimental sensor tracks movements on anything from a human arm to a wall and makes it into a mobile computer.

不管是在人的手臂还是墙壁上，该试验传感器都能跟踪其表面上的动作，并把使之成为移动电脑。

youdao

Use a swing-arm floor lamp instead, or mount a swing-arm wall lamp above the headboard.

用摇臂式的落地灯，或在床头板上安装一个摇臂式壁灯。

youdao

I can't define where I begin and where I end, because the atoms and the molecules of my arm blended with the atoms and molecules of the wall.

我也不知道我从哪里开始的将从哪里结束，因为我胳膊上所有的原子和分子都与墙上的原子分子融合在一起了。

youdao

As it moves beyond the protective arm of the harbour wall, the cool breeze of very early morning picks up.

BBC: Sardinia, land and sea

He said he looked over to see Congresswoman Giffords leaning against a wall, and a staffer had placed an arm around her.

WSJ: Arizona Rep. Giffords Shot in Tucson

On a more painful note, John Rhys-Davies has been speaking about how he suffered a broken arm when a 12-foot wall fell on him during filming in Croatia.

BBC: On the global Taff Trail