表示论提供了表达许多数论现象的语言。
海鲜的真正成本不仅仅是标价,还有我们未偿还的环境债。
如果你能梦想,你就能实现它。
In business, as in life, you have to take calculated risks.
The more we learn about sensory biology, the more we realize how intricate and finely tuned our nervous system is.