【Native Speaker每日综合训练—45系列】【45-09】科技 E-Cigarette

yatina

Time2
how e-cigarettes' working
this device has threated teens
e-c are out of regulation and easy to buy for teens
study shows that e-c are not completely safe

Time3
vapor flavorings do harm to children
many aspects of the society should come up solutions for e-c

Time4
a study shows that e-c makes bacterial infections resistant to antibiotics
how it working
not nicotine products
brands

Time5
explain why vaping is not safe

Time6
vappors contain chemical flavorings, which make e-c dangerous
conclusion: e-c is not safe

Obstacle
e-cigs are well-known
do not know the disadvantages
organizations try to regulate the products
three main ingredients in e-cigs
scientific study
flavors dangerous
legislation in U.S.