"I went over to Africa as a socialist, and after about five or six years of hitting my head against the wall, became a small "c" capitalist."

VOA: standard.2010.08.09

There's the hard sphere. It wants to collide against the wall to create a force on the wall, and I have a couple of the hard spheres that are nearby, right, and in the absence of any interactions, I get a certain pressure.

给墙一个作用力,现在它的附近，还有许多小球,没有相互作用时,它将直接冲向这面墙。

麻省理工公开课 - 热力学与动力学课程节选

They threw me up against the wall and checked me out, because I was a kid and I wanted to go there and see, just for the purpose of history, of being there.

他们把我推到墙上开始检查,因为我是个孩子而且我想去那看看,就是为了见证历史,亲身体验

耶鲁公开课 - 1871年后的法国课程节选

The ICRC report says that all 14 detainees were subjected to sleep deprivation, beatings and suffocation with water, and that all of them were repeatedly smashed against the wall.

VOA: standard.2009.03.23

Democrats trying to steer reform through Congress against a nearly solid wall of Republican opposition said the president delivered a clear vision and specifics, and a strong message of leadership.

VOA: standard.2009.09.10

With U.S.unemployment near double digits, Cardillo cautions the Obama administration to tone down its rhetoric against Wall Street - something political analysts say is unlikely with U.S.mid-term elections only months away.

VOA: standard.2010.07.20