The arch was used by the early cultures of the Mediterranean area chiefly for underground drains, but it was the Romans who first developed and used the arch extensively in aboveground structures.

在地中海区域的早期文明中，拱形结构主要被运用在地下排水管上，但在地上建筑中首先发展并广泛使用拱门的是罗马人。

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The structural upgrade consisted of converting the multiple arch to basically a gravity structure by partially infilling the arch bays with conventional concrete.

这座大坝的改造升级，采用方法是用普通水泥浇筑拱槽，把基本上是重力结构的大坝部分改建为多拱大坝。

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In particular, try wearing an arch strapping and a commercial arch support.

一个特别的方式是可以试试戴一个脚弓矫正器和脚弓支撑器。

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The famous Finnish American building designer, Eero Saarinen,designed the Gateway Arch during a national competition in the late nineteen forties.

VOA: special.2009.03.04

I am especially concerned about attendence, So if you have arch-practice these Tuesday afternoons and can't be here every week, you shouldn't take this course.

我很在意考勤，所以，如果周二下午,你有实践活动课,不能每周都出勤的话，建议你不要选这门课。

麻省理工公开课 - 电影哲学课程节选

That is a maximum If you are sharing your time and energy during this period on Tuesday afternoons, or the arch-field don't work so think carefully about that.

让大家充分发挥自己的能力,如果每周二下午这段时间,你都有时间，精力也很充沛，就可以来上这门课，不过这样你就没时间参加实践活动了,所以请仔细考虑吧。

麻省理工公开课 - 电影哲学课程节选

Arch Coal, Inc. was organized in Delaware in 1969 as Arch Mineral Corporation.

FORBES: Markel's Gayner Buys Alliance Holdings, Moody's, Norfolk Southern, Sells Sysco, Vodafone

"Arch Linux ARM is a proud contributor to the Marvell SMILE Plug, " said Kevin Mihelich, Lead Developer of Arch Linux ARM.

ENGADGET: Marvell and Stanford create SMILE Plug cloud computer, SMILE Consortium to get companies and devs to build a better education system

Red and white industrial rope light strands will grace the Canadian arch portion of the bridge, while red, white, and blue strands will grace the U.S. double-arch portion of the bridge.

FORBES: Soo Bridge Celebrates 50 Years, Ambassador Bridge Fights, and the Mighty Mac Separates