A man listens to rock music with full attention in Haidian Park of Beijing on May 3, 2007.
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海淀公园人行天桥位于北京海淀公园内,其钢-混凝土组合连续梁为双线双曲下承式箱梁。
The pedestrian overbridge of Haidian Park is located in Beijing Haidian Park, whose steel-concrete continous beam is a bifilar and hyperbolic through box beam.