The forest was almost impassable.
森林几乎不可逾越。
The soldiers moving through the area had to struggle against the bad weather, which could render the primitive roads impassable.
士兵们在穿越那一地带时, 必须与恶劣气候抗争, 因为恶劣气候可能使得那些原始的道路让人无法通行。
When the road became impassable, we had to ditch the car and walk.
道路无法通行时, 我们只好弃车步行.
