英语翻译：我从二层走楼梯到一楼，楼梯很窄，只容一人通过?

I walked down from the second to the first floor. The narrow stairs only allowed the passage of one person at a time.

I walked from the second floor to the first floor.The stair is very narrow which can only one person pass away.

I walked down from the second floor to the first floor. The staircase is so narrow that only one person can pass through.