X-back

例句：

1. 1. The X-ray machine was used to take pictures of the patient's internal organs.
   X射线机被用来拍摄病人内脏的X光片。
2. 2.X-rays are used to detect fractures in bones.
   X射线用于检测骨骼中的骨折。
3. 3. The doctor ordered an X-ray to rule out any internal injuries.
   医生要求做X光检查以排除任何内部伤害。