"There are 50 million smokers in America, 25 million of whom want to quit" says Cheng. Mainland China alone has 300 million smokers, many of whom must want to stop smoking.
「美國有五千萬吸菸人口，其中兩千五百萬想戒菸」，他說，光是中國大陸，就有三億吸菸人口，其中想戒菸者應相當可觀。