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There is full of varieties of electrical equipment in modern society. It is normal that everyone has a cellphone. People has become more and more dependent on electrical equipment. In order to solve many kinds of problems, lack of electrical or plug, people even invent power bank and extension cord. While people recharger the power of electrical equipment, it seem to replenish our own energy of soul simultaneously.
Shih Chien University
Taoyuan City, Taiwan
JUN YING ZHENG,
Shih Chien University