The Gateway Arch in Saint Louis,Missouri is the tallest freestanding monument in the nation.

VOA: special.2009.03.04

I think a lot of us, we do what we can in this lifetime, hoping that we're are part of a long trajectory of a moral arch toward justice What would like to see in America in 20 years?

我认为我们之中很多人在一生中会竭力奋斗，希望我们能够沿着道德，正义的,的轨迹发展,您如何构想美国20年后的情景呢？

普林斯顿公开课 - 人性课程节选

..I have kept hidden in the instep arch Of an old cedar at the waterside A broken drinking goblet like the Grail Under a spell so the wrong ones can't find it, So can't get saved as Saint Mark says they mustn't.

我还保存着一只坏了的高脚酒杯,埋在水边的一棵老树底下,像受了符咒的圣杯,使坏人找不到，如圣马可所说：他们因此不能得救。

耶鲁公开课 - 现代诗歌课程节选

It is the largest single-span concrete arch bridge in the Western Hemisphere.

VOA: special.2010.10.27

the Gateway Arch in Saint Louis,Missouri;

VOA: special.2010.07.30

Earlier this year, Tehran's arch-enemy Israel test fired its own Arrow 2 missile in a simulation of stopping the Shahab-3.

VOA: standard.2009.09.28

The school I went tohad an arch just like that. Was your school here in Phoenix?

VOA: standard.other