hollow bed

例句：

1. 1. She moved intoa new apartment and bought an empty bedfor herself.
   她搬进了一套新公寓，为自己买了一张空床。
2. 2. The oldman had a hollow bed made for himby his grandson.
   那位老人由他的孙子为他做了一个空心床。
3. 3. Thehollow bed was filled withstraw to make it more comfortable.
   这个空心床被填充了稻草，以便更舒适。