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In summer, many people will go to the beach to have fun. While we leaved
the beach, our feet were fulled with the sand every time,this stair is set with
the pressure equipment, it can prevent people to take the sand away before
you leaved the beach, when you stepping on it, the stair will blow air out to
let the sand on the feet dry and drop.
Southern Taiwan University of Science and Technology
Southern Taiwan University of Scien
Han Sheng Siao Chen Ning Lee Chia Yin Chen Jun Lung Wu