The road twists through the mountain pass.

这条路蜿蜒穿过山口。

The hiker took a pretty pass over the mountain to reach the summit.

登山者经过一段相当陡峭的山路到达了山顶。

Due to the heavy snow, the mountain pass was temporarily under a natural blockade.

由于大雪，山口暂时被自然封锁了。