Collaborating with Princeton researcher Robert Dicke, the pair confirmed Dicke's hypothesis that the original big bang left behind low-level radiation detectable throughout the universe.

他们与普林斯顿大学的研究者罗伯特·迪克合作，验证了迪克提出的假设，也就是最初的大爆炸使得整个宇宙都充满了可以检测到的微弱辐射。

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Irradiation exposes food to a low level of ionizing radiation to kill bacteria, molds, yeasts, parasites, and other microorganisms that can lead to food spoilage and illness if untreated.

辐射是将食品用较弱的电离放射法杀灭细菌，孢子，霉菌，寄生虫和如果不经处理就能导致食品变质和疾病的其他细菌。

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A hypothetical release of radiation staying near the ground would be subject to low-level winds, which are more prone to varying.

一个假设的辐射泄露在近地停留将取决于低空风，更容易变化。

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Residents groups have suggested that until more is known about the effects low-level RF radiation may be having on the long-term health of children, mast construction should be limited in certain areas.

BBC: T-mobile warning over masts

Separately to the privacy concerns, some health officials feared the Rapiscan 1000SP scanner, which uses low-level X-rays to generate the image viewed by screeners, might expose passengers to unsafe levels of radiation.

BBC: TSA to phase out Rapiscan 'naked scanners'