质子加速器是目前世界上最先进的放射治疗设备.

Proton accelerator is the most advanced radiotherapy equipment.

这张照片中，一个病人在美国加州罗马琳达大学医学中心接受治疗，在那里质子加速器全球首次专用于医疗环境。

In this photo, a patient receives treatment at Loma Linda University Medical Center in California, the world's first proton accelerator built specifically for a medical environment.