在数学中，你并不理解事物。你只是习惯了它们。
In mathematics, you don't understand things. You just get used to them.
The trade-off between bias and variance is a fundamental concept in machine learning.
I hope to always be number one, but maintaining this level is quite a challenge.
一个人乘火箭飞向星空，而我只有这把破吉他。
未来交通是电动的，我们正在引领这一变革。