你越深入数学，就越意识到还有多少未知。

这类波可以像光波一样被反射、折射和偏振。

The forest doesn't need us, but we need the forest—this truth should guide every decision we make in forestry.

城市的建筑应该庆祝它的多样性。

The Internet is a global resource that should be managed for the public good.

"Computational learning theory provides a mathematical framework for understanding the capabilities and limitations of machine learning algorithms."