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客人:
Is Qi Gong similar to Indian Yoga exercise? 
气功是不是与印度的瑜伽相似？
服务员:
You’re right， sir. But I’m afraid it will take you a long time to have a good command of it.
是的，先生。但恐怕您需要很长时间才能掌握。
客人:
What a pity! I have not enough time to learn it.
真可惜！我没有足够的时间去学。