Thousands of people lined up to walk across the new structure, which consisted of a narrow aluminum footbridge surrounded by steel balustrades projecting out at obtuse angles.
成千上万的市民排队竞相过桥，这条桥的主体为狭窄的铝制人行桥面，两边为钢制栏杆，栏杆呈钝角状向外延伸。
If you test by the triangle's angles, possible types are right, acute, obtuse, or equiangular.
如果您用三角形的角度进行测试，那么可能的类型是直角、锐角、钝角或等角三角形。
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