对于职业的处理放射性物质的工人，接触辐射的极限是50毫西韦特。
The limit for occupational radiation exposure among workers who deal with radioactive material is 50 millisieverts.
但没有确实的证据证明少量辐射，低于100毫西韦特，会导致癌症。
But there is no hard evidence proving that low dose radiation, below 100 millisieverts, is likely to cause cancer.
从客观的角度看来，在美国，一个人通常一年受到的辐射量为6.2毫西韦特。
To put that in perspective, in the United States, a person typically gets a radiation dose of 6.2 millisieverts per year.
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