If you can’t tell what you desperately need, it’s probably sleep.
每一次航行都是自然这本巨著中新的一页,由发现之手书写。
在任何情况下都要寻找积极的一面。
Critical comments by students should be taken in a friendly spirit, accumulation of material should not stifle the student’s independence.
矿工的安全永远不应该用成本效益分析来衡量。
The future of electronics lies in sustainability—designing with the end in mind.