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“See your lungs ”would like to convey to remind people to
reduce smoking!Filter the tail of the tarwith the changes in the
time ofsmoking and showing a lung.When you sucking out a
cigarette,you will find a tar blackened lungs!Reduce smoking
is everyone's responsibility.
Keyi college of zhejiang Sci-Tech
Hangzhou, Zhejiang Province, China
Bin Li Bin Yu Pengfei Shi Nan LI