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问题		答案
Good morning everyone. 开始学习		*
Thank you for coming. 开始学习		*
Today I’d like to tell you about membrane. 开始学习		*
My talk will be in three parts. 开始学习		*
Firstly, I’d like to tell you presentation what is membrane. 开始学习		*
Secondly, I would like to present membrane process classification. 开始学习		*
Finally, I will move on to application. 开始学习		*

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