The whole reactor is encased in a thick concrete shield, which prevents radiation escaping into the environment.

整个反应都包裹在一层厚厚的混凝土防护层里面，避免辐射泄漏到外界环境中。

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He explained: "Now the actual amount of radiation escaping is about two watts, not much more than you get from a cell phone."

他解释说：“现在实际逃逸到太空的辐射量大约只有两瓦特，这并不会比使用手机中产生的辐射更多。”

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The crews produced vital maps of the plume of radiation escaping from the crippled reactors.

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Mobile phones must be switched off on site, and the microwave in the common room resides in a Faraday cage to stop radiation escaping.

BBC: Aye to the telescope