roentgen rays

例句：

1. 1. The doctor used a roentgen ray to examine the patient's chest.
   医生用伦琴射线检查了患者的胸部。
2. 2. X-rays are used to diagnose fractures and other injuries.
   X光用于诊断骨折和其他伤害。
3. 3. The radiologist used a roentgen ray to take a picture of the patient's spine.
   放射学家用伦琴射线为患者拍摄了脊柱的照片。