"Instructors were good at teaching music but they weren't the best at using technology to run demand and market themselves," says Cox.

“老师们善于教习音乐，但他们在运用网络技术找到需求并推广自己方面不太擅长，”科克斯说。

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Instructors teach them the basic steps they will need and then let the mother and child dancing partners enjoy the rhythm of the music.

教练教授基本的舞步后，妈妈和她的孩子这一对舞蹈搭档享受音乐的节奏。

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Boom Bags creator Mark Wright says the product is useful for people like sales reps and yoga instructors, who have to be able to give audio presentations or play music on the go.

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