The USCF researchers concluded that many kids who went on to smoke regular cigarettes may not have used nicotine at all if e-cigarettes did not exist.
研究者们表示,电子烟的出现让那些平时只抽普通香烟的孩子开始接触尼古丁。
2
The USCF researchers concluded that many kids who went on to smoke regular cigarettes may not have used nicotine 2 at all if e-cigarettes did not exist.