sternal

例句：

1. 1. He felt the pain in his sternum as he lay on the bed.
   他躺在床上感到胸骨疼痛。
2. 2. The doctor examined her sternum and found no fractures.
   医生检查了她的胸骨，发现没有骨折。
3. 3. She was able to breathe normally after having her sternum operated on.
   她经过胸骨手术之后能够正常呼吸。