national genetic dose

例句：

1. 1. The study found that the national genetic dose of lead exposure in children was significantly higher than that in adults.
   研究发现，儿童的铅暴露国家遗传剂量明显高于成人。
2. 2. The researchers analyzed the national genetic dose of various pollutants in the environment and proposed a series of measures to reduce their impact.
   研究人员分析了环境中各种污染物的国家遗传剂量，并提出了一系列减少其影响的措施。
3. 3. The study also found that the national genetic dose of certain diseases could be reduced by adopting healthier lifestyles.
   研究发现，通过采取更健康的生活方式，某些疾病的国家遗传剂量可以降低。