The triangle is an important structural shape in geometry and construction.
在几何和建筑中，三角形是一种很重要的结构形状。
More and more arable land were turned to construction land in Changjiang River Triangle area, arable land protection met great difficult.
长三角地区越来越多的耕地被建设所占用，耕地保护面临着巨大的压力。
Tour Triangle will be not the first skyscraper in the city of Paris since the 70's because there is already an other skyscraper under construction.
三角塔并非巴黎自70年代以来的首座摩天楼，因为已经有另一座摩天楼正在施工。
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