这些数据的有机组合使得计算比如烟雾暴露的中位水平成为了可能。
The aggregation of data makes it possible to identify, say, a median level of smog exposure.
比如烟头、鸡毛、废电、煤渣、建筑垃圾、油漆颜料、食品残留物等等。
Such as cigarette butts, feather, waste electricity, coal cinder, construction waste, paint pigment, food residue and so on.
比如烟民是在用电子烟戒香烟，还是在不能抽香烟时，用它来过尼古丁瘾呢？
For instance, are smokers using e-cigarettes to quit cigarettes, or they using them to get a nicotine hit at times when they can't smoke cigarettes?
大脑发现最好使嗅觉感受器(19)用于保持对不熟悉和紧急事件信号的敏感，(20)比如烟的气味，这可能表明了火灾的危险。
The brain finds it best to keep smell receptors 19 for unfamiliar and emergency signals 20 the smell of smoke, which might indicate the danger of fire.
大脑发现最好使嗅觉感受器(19)用于保持对不熟悉和紧急事件信号的敏感，(20)比如烟的气味，这可能表明了火灾的危险。
The brain finds it best to keep smell receptors 19 for unfamiliar and emergency signals 20 the smell of smoke, which might indicate the danger of fire.
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