"There are still big debates about which type of particle is the most toxic," said Pope. "We're not sure whether it's the sulfates, or the nitrates, or even fine dust that's the most problematic."

Pope教授谈道：“哪些类型的粒子对人体最为有害，关于这个问题人们仍在争论不休，我们暂时还不明了，最具危害性的，到底是硫酸盐，硝酸盐，还是细微粉尘颗粒。”

youdao

"There are still big debates about which type of particle is the most toxic," said Pope. "We're not sure whether it's the sulfates, or the nitrates, or even fine dust that's the most problematic."

Pope教授谈道：“哪些类型的粒子对人体最为有害，关于这个问题人们仍在争论不休，我们暂时还不明了，最具危害性的，到底是硫酸盐，硝酸盐，还是细微粉尘颗粒。”

youdao