雨后桥下与露天地面差异
After-rain surfaces under a bridge and in the open
分类：城乡规划/光照与环境
提示词
按原图桥底遮蔽范围与湿面参考，区分桥下较干地面和露天湿面，水迹在两者交界渐变，柱位和既有排水口保持。
Use the bridge-cover extent and wet-surface reference to distinguish relatively dry sheltered ground from wet open ground after rain, grading moisture at the boundary while preserving columns and existing drains.
标签：城乡规划、光线与环境
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