深度学习是一种机器学习形式，它使计算机能够从经验中学习，并通过概念层次来理解世界。
"Deep learning is a form of machine learning that enables computers to learn from experience and understand the world in terms of a hierarchy of concepts."
Leadership is about making tough decisions today that will benefit generations tomorrow.
"The universe is not only stranger than we imagine, it is stranger than we can imagine."