E-cigarette popularity has increased and with that another possible source of toxicity.

电子香烟开始变得流行，于是产生了另一种可能的毒性来源。

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E-cigarette popularity has increased and with that another possible source of toxicity.

电子香烟开始变得流行，于是产生了另一种可能的毒性来源。

youdao