| 摘要 |
A concentration set convenient to carry is provided to enhance concentration when concentration is needed in anywhere by using a prefabricated method. A concentration set convenient to carry comprises an ear-muff, a glasses hanger, and a circumference blade. The circumference blade is attached in glasses. A man having preexistence glasses immediately attaches on the glasses. A man who does not use glasses uses a product composed with glasses. The ear-muff, the glasses hanger, and the circumference blade are purchased respective.
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