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The value chain is the set of activities through which a product or service is created and delivered to customers.
在建筑中,虚空和实体同样重要。
The Erdős discrepancy problem fascinated me because it was so simple to state yet so deep in its implications.
挽救失败的事,就好像驾驭悬崖边的马,不能轻拍一鞭。对于即将成功的事,就好像拉船上沙滩,不能少停一桨。