bench tunnel portal

例句：

1. 1.The bench tunnel portal is a popular spot for tourists to take photos.
   长凳隧道入口是游客拍照的热门地点。
2. 2.The tunnel portal was designed to provide easy access to the underground parking lot.
   隧道入口设计为方便进入地下停车场。
3. 3. The portal is a crucial link between the outside world and the facility's interior.
   入口是设施内外连接的关键通道。