来时惊动很大，走时没有任何声响。

The value chain is the set of activities through which a product or service is created and delivered to customers.

我越是坚决地以自我存在于时代的条件中，我就越清晰地听到过去的语言，越感受到世纪的气息。

True loneliness is not being alone, but feeling lonely in a crowd.

教育在经济发展中的作用不可低估；它是创新和生产力的基础。

Train people well enough so they can leave, treat them well enough so they don't want to.

气候变化不是未来的威胁，它正在改变我们今天的田地。