互通式立體交叉一種設計的使車(chē)輛不用穿過(guò)另一條線(xiàn)的車(chē)輛就可以從一條路到另一條的交叉路口
A highway intersection designed to permit traffic to move freely from one road to another without crossing another line of traffic.
在大多數的主要交叉路口，都有一幅街道（朗巴德街、俄亥俄街、市場(chǎng)街等等）的詳圖刻在人行道的石頭上。只要你低頭看一下，就知道自己所在的位置了。
At most of the important crossings there is a plan of the streets(Lombard Street; Ohio Street; Market Street; and so on)cut into the stone of the sidewalk so that you can look down and see where you are.
