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。
That first step of building a solid working relationship with all key stakeholders was critical to ARCH being able to deliver aid quickly, to as many animals as possible.
首先和主要的相关人士建立一个巩固的合作关系是很重要的，这样做让ARCH可以尽快地，为尽可能多的动物提供救助。
America's arch rival, the Soviet Union, had launched not only the first satellite into orbit, but the first person as well.
美国的主要竞争对手，苏联，不但是成功发射第一颗卫星，别且也是第一个载人航天成功的国家。
The first painted segment of the arch is ready for the mounting.
拱状大梁的第一部分已经进入安置准备。
First, "Copperfield had a setup of two towers on a stage, supporting an arch to hold the huge curtain that would be used to conceal the statue."
首先，“科波菲尔在设置好两座塔形立柱的舞台上，上面支起一道门拱以便悬挂巨大的幕布，用来遮挡雕像的。”
You are also expected to manually set up several configuration files but if this is your first build you can safely use the defaults in the Arch Linux wiki entry mentioned in the step-by-step guide.
如果你也想手动设置一下文件，但是如果这是你第一次搭建Linux，你可以放心的使用Arch Linuxwiki一步步的条目说明。
I am just come to anchor after crossing the stormy region of the kara, khala[2] series; and I am reading "The rain patters, the leaf quivers, " for me the first poem of the Arch Poet.
（孟加拉儿童初级读本里的韵文---原注）在学习这样的词句前，我刚经过像karakhala这样的双音练习的狂轰滥炸；我念着“天上淅沥下雨，树叶婆娑摇曳”，这对于我来说是“原始诗人”的第一首诗。
It's even worse when it happens as your arch rival surpasses you in market value for the first time ever.
如果此时恰逢这个对手的市值平生头一回超越你，那就更糟糕了。
Arch dam construction in China has developed and the quantity stands first.
我国拱坝建设也后来居上，数量已是世界第一。
Back to the arch, this is the very first view of the arch when entering st.
回到拱门，这是从东边进入圣路易所看到的第一个景象。
Once your arms are over your head, be sure to streamline and arch your body so that your hands hit the water first.
当胳膊在头顶部时，一定要保证你的身体的流线型和后仰的弓形，这样才能保证你的手先入水。
First cut an arch which will be the outline of the petals.
首先剪出一个弧形，作为花瓣的轮廓。
In the reinforcement and leakage-proof of the masonry arch dam, we had the first attempt and achieved good results.
我们在浆砌石拱坝防渗加固中进行了首次尝试，取得了良好的效果。
Is the largest span in the world today, the ancient construction of the first open-shoulder stone arch bridge.
是当今世界上跨径最大、建造最早的古代敞肩型石拱桥。
Objective To study pathogenesis, symptoms and treatment of the first and second branchial arch syndrome.
目的探讨第一、二鳃弓综合征的病因学、临床症状及治疗手段。
Moreover, the acceleration distribution curve of high arch dam calculated for the first time in the paper has certain reference interest for design.
另外，本文首次计算出高拱坝的加速度分布曲线，对设计具有一定的参考意义。
Lishi tunnel is the first loess multi-arch tunnel in China. The designs of the tunnel are briefly introduced, including lining structure, prevention drainage treatments and construction process.
离石隧道是我国第一座黄土连拱隧道，简要介绍了该隧道的衬砌结构、防排水处理、施工工序等的设计概况。
Seismic responses of a typical arch dam are studied by use of the principle of pulse control for the first time.
首次运用脉冲控制原理对一混凝土典型拱坝的地震响应进行了分析。
The optimization of laying out these structures, paths of flow jets and a water cushion pool for a high arch dam is first discussed systematically in this paper.
本文首次系统地对高拱坝坝身泄洪孔口、泄流过程以及坝下水垫塘的布置优化问题进行了讨论。
The first thing you see, after the turnoff, is a heavy, dun-colored metal gate framed by a white tiled arch, and then the guards standing in front with long-barrelled automatic weapons.
拐进岔道，第一眼看到的，是一扇暗灰色金属大门，沉重，镶白瓷砖的拱形边框。
When the arch bridge was erected, arch sections were first assembled on the ground, the arch sections were then put together into an arch with the help of temporary supports, and the steel arches w...
在钢拱架的安装过程中，采用先地面节段组拼、临时支架拼装成拱，然后用大型浮吊每两榀钢拱架吊装就位、利用地形用万能杆件支架代替缆风临时固定的施工技术是成功的。
Ganjiang bridge in Jishui is the first box-arch bridge, which has continuous cast boards and girders construction on the arch and whose piers made from reinforced concrete are hollow.
吉水赣江大桥是江西省第一座拱上建筑采用现浇连续板梁式结构，且桥墩为钢筋混凝土空心墩的箱型拱桥。
Youxizhou Mingjiang Bridge of Fuzhou is the first open-spandrel rigid-frame arch bridge without vertical columns and oblique supports.
福州市尤溪洲闽江大桥是国内首座在拱肋（圈）上不设立柱和斜撑的空腹式刚架拱桥。
On this model basis the first step method is used for optimization of the arch axis coefficient of the arch bridge.
在此模型基础上，使用一阶方法对拱桥的拱轴系数进行优化。
Based on first-order optimization calculating theory, authors established the optimal finite element model of swivel construction of arch bridge adopting hydraulic sync elevation technology.
根据一阶最优化计算理论，构建了采用液压同步提升技术进行转体施工拱桥的优化有限元模型。
Lishi tunnel is the first loess multi-arch tunnel in our country, which is a solid engineering of scientific research projects belonging to the Ministry of Communications.
离石隧道是我国第一座黄土连拱隧道，是交通部科研项目的实体工程。
Moreover, the acceleration distribution curve of high arch dam calculated for the first time in the paper has certain reference in...
另外，本文首次计算出高拱坝的加速度分布曲线，对设计具有一定的参考意义。
Moreover, the acceleration distribution curve of high arch dam calculated for the first time in the paper has certain reference interest ford...
另外，本文首次计算出高拱坝的加速度分布曲线，对设计具有一定的参考意义。
Moreover, the acceleration distribution curve of high arch dam calculated for the first time in the paper has certain reference interest ford...
另外，本文首次计算出高拱坝的加速度分布曲线，对设计具有一定的参考意义。
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