three rail crossing

例句：

1. 1.The three-rail crossing is a busy area with heavy traffic.
   这个三轨交叉口是一个繁忙的区域，交通非常拥挤。
2. 2.The train will pass through the three-rail crossing on its way to the next station.
   火车将在前往下一站的路上经过这个三轨交叉口。
3. 3. The construction workers were working around the three-rail crossing when it collapsed.
   建筑工人在三轨交叉口附近工作时，那里发生了坍塌。