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Nowadays,although we emphasize the classification of garbage,it’s more beneficial for scavengers if they can find what they need more directly .the surface of the garbage printed a logo of bottle which can tell people could throw the beverage bottles in this garbage can, therefore the scavengers could pick up the bottle directly instead of rummage the garbage can, it can be more convenient and clean.
HuaZhong University of Science and
Jie Xu Hao wang Ying Zhou Wensi Li