Innercity poverty is a risk factor: asthma mortality,for example,is highest among Americans of Puerto Rican and African descent.

 
  • 城市贫民区倒是一个致病因素:比如,美藉波多黎哥人和美藉非洲人后裔的哮喘病死亡率最高。
今日热词
目录 附录 查词历史