Knowledge has become a key production factor in the age of the knowledge-based economy.
知识成为知识经济时代的重要生产要素。
21st century is a age of knowledge-based economy, and also a age of network.
21世纪既是知识经济时代，又是电子网络时代。
21st century is a age of knowledge-based economy, and also a age of network.
21世纪既是知识经济时代，又是电子网络时代。
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