rib space

例句：

1. 1.He lay on his back, feeling the rib space beneath him.
   他躺在背上，感觉到肋骨间的空间。
2. 2.The doctor advised him to take a break from the rib space exercise.
   医生建议他从肋骨间的锻炼中休息一下。
3. 3.The patient was lying in the rib space, waiting for the anesthesia to wear off.
   病人躺在肋骨间，等待麻醉药效消退。