Most teachers graduated from a two year training class in Huaxia centre and most have practiced for about twenty years.
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本文报道利用微机技术和频谱分析方法，观察了气功延缓老年智能减退的作用。
With computer technology and the method of analyzing the frequency spectrum, the authors observed the action of Qigong in delaying the reduction of intelligence in the aged.
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