grade-separated pedestrian crossing的意思|示意

分层行人过路处 ... grade-separated interchange 分层道路交汇处 grade-separated pedestrian crossing 分层行人过路处 gradient 斜度；坡度；倾斜度；梯度 ...

分层道路交 ... 分层过路设施 grade-separated interchange 分层道路交 汇处 grade-separated pedestrian crossing 斜度；坡度；倾斜度；梯度 graduated release valve ...