platform tunnel

例句：

1. 1.The platform tunnel is a popular tourist attraction in the city.
   平台隧道是该市的一个受欢迎的旅游景点。
2. 2. The platform tunnel provides easy access to the subway station.
   平台隧道为地铁站提供了便捷的入口。
3. 3. The platform tunnel was built to improve transportation efficiency.
   平台隧道的建造是为了提高交通效率。