The sampling of food should target in priority the main potential contributors to radiation exposure based on their susceptibility to radioactive contamination and their significance in the diet of the general population and most vulnerable populations groups, such as the infant and young child, and women of childbearing age.
7132
重要的是，应认识到，由于高浓度或受污染食品的高摄入量，通过饮食可能会摄入较多放射性物质。
It is important to bear in mind that the dietary exposure to radioactive material can increase as the result of either a high concentration or a high consumption of contaminated food, and therefore both aspects need consideration.
7133
这将对受影响国家的食品和食品生产造成什么影响？
What impact will this have on food and food production in the affected country?
The impact on food and food production in a country affected by a radiological or nuclear emergency will depend upon the types of radionuclides and the amount of radioactivity deposited or present where food is being produced or harvested.
Although the presence of radioactive iodine in food is of immediate concern after nuclear emergencies, it will not represent a problem for consumption in the long term due to its relatively short half-life and the fact that it will naturally decay over a short time frame.
7136
而放射性铯可以在环境中存续多年，这可能会对食品生产和贸易造成长期问题，并危及人类健康。
In contrast, radioactive caesium can linger in the environment for many years and could continue to present a long term problem for food production and trade, and a threat to human health.
7137
在最高风险区域（疏散区）以外，食品会受到污染吗？
Can food be contaminated in areas beyond the most critical zone (evacuation zone)?
7138
在核紧急情况期间划定疏散区是为了防止人们暴露于对人类健康构成威胁的不可接受的直接辐射水平。
During a nuclear emergency, an evacuation zone is established to prevent people from being exposed to immediate and unacceptable levels of radiation posing a threat to human health.
However, the release of radioactivity into the environment may result in contamination of food chains and potentially cause contamination of food beyond this most critical zone through uptake from soil to crops, or to animals through feed, even when levels of radioactive contamination are lower than those which might pose a direct threat to human health.
7140
即使放射性污染水平低于可能对人类健康构成直接威胁的水平也可能会构成问题。
The acceptable amount of radioactivity in food is set at low levels by the regulatory authorities, taking into account the possibility of contaminated food being eaten over an extended period and resulting in a cumulative dose.