The value chain is the set of activities through which a product or service is created and delivered to customers.
诗歌不是奢侈品,而是必需品。
城市是一个有机体,建筑必须回应它的变化。
成功不是偶然的,而是习惯的结果。
战争是外交的延续,可通过其他手段。