在几何和建筑中，三角形是一种很重要的结构形状。
The triangle is an important structural shape in geometry and construction.
大型三角形钢架结构是一种高效率的结构。
The large steel structure consists of triangles, which is a structural efficient form.
大型三角形钢架结构是一种高效率的结构。
The large steel structure consists of triangles, which is a structural efficient form.
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