The value chain is the set of activities through which a product or service is created and delivered to customers.
世界充满了来来去去的迹象和奇迹，如果你幸运的话，你可能会在它们飞过时抓住它们的尾巴。
诗中的每个词本身就是一个世界。
The way in which men produce their means of subsistence depends first of all on the nature of the actual means they find in existence and have to reproduce.
"History is not just about the past; it's about the present and the future too."
Success comes from persistence and the willingness to learn from failures.