The latest treatment - proton radiation therapy - involves a proton accelerator that can be as big as a football field.
最新的治疗-质子放射治疗-包括一个质子加速器,可以像一个足球场那样庞大。
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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.