求翻译：相比之下，汶川地震和玉树地震发生在我国西部偏远山区，而海地则是西半球经济最落后的国家之一，这三个区域的建筑多为砖混结构，甚至是土木结构，很多建筑没有钢筋，或者柱子里钢筋太少太细，这样的建筑在地震波的晃动下极易倒塌。是什么意思？

In contrast, the Wenchuan earthquake and Yushu earthquake occurred in the remote mountainous areas of western China, Haiti is one of the most backward countries in the Western Hemisphere economy, the three regions of buildings are mostly brick structure, and even civil engineering structures, many b

In contrast, Wenchuan earthquake-Shee and earthquake remote mountainous areas in the west of the country, and those in the western hemisphere, Haiti's most backward countries of the region 3 of the building is brick structure, and even the civil structure, many buildings have no steel reinforcement

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By contrast, Wenchuan earthquake and the earthquake in yushu in the remote mountainous areas of the Western region in China, and one of the most economically backward country Haiti is the Western Hemisphere, the three regional building of brick-mixing structure, or even civil structures, many buildi

正在翻译，请等待...