When you are stuck， explain your problem to others. Often simply laying out a problem will present a solution. Make “explaining the problem” part of your troubleshooting process.

The past is never dead. It's not even past.

孩子们需要知道与众不同是可以的。

农民是最早的环保主义者，每天都在与自然合作。

In the realm of algorithms, efficiency is not just a goal; it is a necessity.

我不是圣人，我是罪人。

数学的历史是人类思想和进步的历史。