世上的一切事情都在不断地发生着变化。
“乌鸦”物象在华夏民族的历史长河中，其文化象征意义不断地发生着变化，并最终合流为不祥之兆。
In the national historical long river of China, "crow" object's cultural symbolic meaning is changing constantly, and meet for ill omen finally.
数排密集的计算机说明了图书馆的职责正发生着变化，科技替代了纸张并且还在不断地变化。
The banks of crowded computers illustrate the changing role of libraries, where technology is replacing paper and the throngs keep coming.
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