2. 外语
  3. 河北省赵县的交河上，有一座世界闻名的石拱桥，叫赵州桥，距今已经有1400多年的历史了。赵州桥非常雄伟，桥长五十多米，有九米多宽，中间行车马，两旁走人。因桥体全部用石料建成，当地俗称大石桥。下面没有桥墩，是一座由28道独立拱圈组成的单孔弧形大桥，横跨在三十七

河北省赵县的交河上，有一座世界闻名的石拱桥，叫赵州桥，距今已经有1400多年的历史了。赵州桥非常雄伟，桥长五十多米，有九米多宽，中间行车马，两旁走人。因桥体全部用石料建成，当地俗称大石桥。下面没有桥墩，是一座由28道独立拱圈组成的单孔弧形大桥，横跨在三十七

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问题     河北省赵县的交河上，有一座世界闻名的石拱桥，叫赵州桥，距今已经有1400多年的历史了。赵州桥非常雄伟，桥长五十多米，有九米多宽，中间行车马，两旁走人。因桥体全部用石料建成，当地俗称大石桥。下面没有桥墩，是一座由28道独立拱圈组成的单孔弧形大桥，横跨在三十七米多宽的河面上。在大桥洞顶左右两边的拱肩里，各砌有两个圆形小拱，既增大流水通道，又增强了桥身稳定性。这就有力地保证了赵州桥在1400多年的历史中，经受住了多次洪水和地震之后，仍挺立在汶河之上。这种设计，在我国建桥史上是一个创举，既减轻了洪水对桥身的冲击力，使桥不容易被大水冲毁，又减轻了桥身的重量，节省了石料。
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答案 Because the whole bridge was totally made of stone materials, it was called Big Stone Bridge by the local people. It is a single-arch bridge consisting of 28 independent arches without any pier, stretching over the river with a span of over 37 meters. At each shoulder of the main arch there are two small round arches to increase passages for the running water and enhance the stability of the bridge. Therefore, though more than 1,400 years has passed, having undergone many floods and earthquakes, it is still standing firmly over the Xiaohe River. The design is a pioneering attempt in Chinese bridge history, which not only weakens the flood’s impact on the body of the bridge and makes it difficult to be destroyed, but also reduces the total weight of the bridge and saves the structural materials.
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