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The light constantly changes, and that alters the atmosphere and beauty of things every minute.
幸福的幸里面是一个“幸”,不是一个“辛”。  或者理解成,Y=Why=为什么,I=我。幸福里面没有为什么,只有我。 
The circular economy presents tremendous opportunities for our industry to reinvent itself.
We are the product of our evolutionary past.