Happiness is the key to life. Without happiness, you have nothing.
快乐是生活的关键。没有快乐，你就一无所有。
孩子的精神比一般人认为的更为高尚。
"The power of machine learning lies in its ability to discover patterns and relationships in data that are not immediately obvious to human observers."
大脑是一个复杂的系统，我们才刚刚开始理解它是如何工作的。