interior escape stair

例句：

1. 1.The hotel has a spacious interior escape stair that can be used by guests during emergencies.
   这家酒店有宽敞的内部逃生楼梯，可以在紧急情况下供客人使用。
2. 2.In the event of an emergency, the family always makes sure to use the interior escape stair.
   在紧急情况下，全家人总是确保使用内部逃生楼梯。
3. 3.The interior escape stair is designed to provide easy access for people in need of assistance.
   内部逃生楼梯的设计是为了为需要帮助的人提供方便的通道。