Badminton
Badminton is a sport that can be done indoors and outdoors. According to the number of participants, it can be divided into singles and doubles, and the emerging 3V3 rules. The badminton racket is composed of a face, a lever, a handle, and a joint of a frame and a lever. The length of a racket is no more than 680 mm, and the length of the racket and the racket is no more than 41 cm. The length of the frame is 28 cm and the width is 23 cm. With the development of science and technology, the devel
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