Your 20s are the perfect time to do a few things that are unusual， weird， bold， risky， unexplainable， crazy， unprofitable， and look nothing like "success". For the rest of your life， these experiences will serve as your muse
The world is full of obvious things which nobody by any chance ever observes.
Dairy products should be both nutritious and delicious.
破坏其土壤的国家就是自取灭亡。
世界上充满了神奇的事物，耐心地等待着我们的感官变得更加敏锐。
市场是人类创造物，和所有人类创造物一样，它们可以被改进。
NP完全性的概念为理解问题的复杂性提供了一个强大的工具。