Knowledge is the source of technology, and knowledge supply chain is an effective channel of knowledge supply in technology innovation.

知识是技术的源泉，知识供应链是技术创新中知识供应的有效通道。

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Knowledge is wealth, knowledge is power, and knowledge is the source of economic and scientific development. This is an irrefutable truth.

知识就是财富、知识就是力量，知识就是经济、科学等方面的源泉，这是颠扑不破的真理。

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The act of teaching is looked upon as a flow of knowledge from a higher source to an empty container.

教学活动被看作是知识从一个较高的源头流到一个空的容器中。

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The best source of pressure is the knowledge that there may never be a better chance than now.

ECONOMIST: Cyprus, Turkey and the European Union

While it's unclear who is holding him, a source with knowledge of the case said based on the evidence, there is every reason to believe that Levinson is alive and well.

CNN: Family releases photos of captive American

"There is every reason to believe based on all the evidence that Levinson is alive and well, " a source with knowledge of the case said.

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