Therefore, it is very important to understand the causes and prevention of radiation brain injury before designing radiotherapy plan for head and neck cancers.

因此，在制定放射治疗的计划以前，必须对脑的放射损伤有充分的了解。

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The first symptoms of radiation sickness-nausea, vomiting, and diarrhea - can appear within minutes or in days, according to the U.S. Centers for Disease Control and Prevention.

美国疾病控制与预防中心称，辐射病的最初症状为恶心、呕吐与腹泻，可在几分钟或几日内出现。

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This study is the largest ever reported to date to evaluate zinc sulfate in the treatment or prevention of taste alteration for patients receiving radiation therapy for head and neck cancer.

这项研究是目前数量最大的评价硫酸锌在治疗和预防头颈肿瘤患者接受放射治疗时味觉改变的作用的报道。

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The prevention of further hydrogen explosions is seen as a priority, because blasts could spew more radiation and damage the reactors.

BBC: Japan quake: Nitrogen pumped into nuclear reactor