Only additional processing with irradiation can ensure that .

只有通过额外的辐射处理才能确保那样的条件。

But to many people the word irradiation spells danger .

但是，很多人认为辐照会带来危险。

Secondary effluent treated by various doses of uv irradiation , respectively .

二级出水处理的不同剂量的uv照射，分别

And some advocacy groups question the long-term safety of irradiation .

另外一些支持团体对辐照的长期性安全感到怀疑。

It has yet to begin . Meat irradiation is permitted but rarely used .

这尚未开始，肉类食品也被允许用辐照杀菌，但很少人使用。