a place where things, especially roads or railways, come together联结点;枢纽;(公路的)交叉口;(铁路)联轨站
You should slow down as you approach the junction.接近交叉口时你应该减速。
UK There's a service station at the next motorway junction (= point from which you can leave the motorway).高速公路的下一个出口处有一个服务站。