back and belly

例句：

1. 1. She lay backon the couch with her eyes closed.
   她躺在沙发上，眼睛闭着。
2. 2. The babywas back and belly full of milk.
   宝宝又大又圆，充满了奶水。
3. 3.He sat back and belly out of theway.
   他坐回原位，让开路。