例如候鸟常常由于大雾或者风暴而迷失方向，导致它们撞向高塔、桥梁、风轮机和树木。
Migratory birds, for example, often become disoriented by fog or storms, causing them to run into towers, Bridges, wind turbines and trees.
李海鹏说：“当时他们了解到当地的桥梁已经断裂，根本不通车，所以他们只好步行向都江堰方向出发。”
"They knew at the time that the bridge was down, and that there was no way across, so they just set off on foot in the direction of Dujiangyan, " Li said.
讨论了不规则桥梁地震反应分析中地震动输入主方向的问题。
The method of determining earthquake input principal direction are studied, which is used for seismic analysis of irregular bridges.
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