The researchers did a study of adult beliefs about the possibility of health risks to children from thirdhand smoke. 研究人员对那些相信三手烟会增加危害孩子健康风险的成年人做了一个研究。
Mendelson says she believes Russians have a lot to learn about Barack Obama and his policies and beliefs. 门德尔松说，她相信俄罗斯对奥巴马和他的政策以及信仰尚有很多待了解之处。
