relative hazard

例句：

1. 1. The study found that exposure to certain chemicals can increase the relative hazard of developing cancer.
   研究发现，暴露于某些化学物质会增加患癌症的风险。
2. 2. The relative hazard of a disease is often used to estimate the number of people who would need vaccinations.
   疾病相对危险性常用于估计需要接种疫苗的人数。
3. 3.The relative hazard of a workplace injury is calculated based on the probability of an employee being injured at work.
   工作场所伤害的相对危险性是基于员工在工作中受伤的概率来计算的。