Still, they said they were unsure of the specific toll air pollution takes on any one person's body, casting doubts on local reports tying the region's dirty air to particular cases of illness.
不过他们说，尚不确定雾霾对人体健康的具体危害，他们对本地媒体报道中有关雾霾造成肺癌的说法持怀疑态度。
Still, they said they were unsure of the specific toll air pollution takes on any one person's body, casting doubts on local reports tying the region's dirty air to particular cases of illness.
不过他们说，尚不确定雾霾对人体健康的具体危害，他们对本地媒体报道中有关雾霾造成肺癌的说法持怀疑态度。
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