bed plane

例句：

1. 1. They took a bed plane to get there.
   他们乘坐了一架卧铺飞机到达那里。
2. 2. The flight was so long that we had to take a bed plane.
   飞行时间太长，我们不得不坐卧铺飞机。
3. 3. The pilot explained how the bed plane works.
   飞行员解释了卧铺飞机是如何工作的。