科研之友
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摘要
<正>Tai Chi (太极拳)is a kind of martial art (武术)in China.In the past,people practiced (练习) Tai Chi for fighting.There are 13 basic forms (基本招式) in Tai Chi.It can help people become stronger and move faster.Now it becomes a popular sport.There is no time limit (限制).People slowly exercise every part of their body.It is good for their hearts and memories(记忆力).
