采矿技术的创新不是为了取代人，而是为了让他们能够更好、更安全地完成工作。

In teaching history， there should be extensive discussion of personalities who benefited mankind through independence of character and judgement.

The more personal it is, the more universal it is.

设计不仅仅是外观和感觉，设计关乎如何运作。