易混淆的单词： Sievert

A dose of 1 sievert produces nausea and vomiting .

1希弗将引起恶心、呕吐。

Nakagawa said that an accumulated dose of 4 sievert kills 50 % of those exposed within 60 days .

中川说，50%的4希弗剂量累积者将在60天内死亡。

Estimated cancer risk from radiation is assumed to be 4 % per sievert , he said .

他说，估计辐射引发患癌症的风险为每西弗4%。

The radiation dose can be expressed in units of sievert ( sv ) .

辐射剂量可以西弗特（sv）为单位。

A single dose of 1000 millisieverts -- or one sievert -- causes temporary radiation sickness such as nausea and vomiting .

单次摄入1000微西或1西弗会暂时引起一些辐射病如晕暄和呕吐。