预防性医疗的悖论：越需要的人越不重视。
The paradox of preventive healthcare: Those who need it most value it least.
To write is to give voice to the silent, to make visible the unseen.
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。
If you find serenity and happiness，they may be jealous；Be happy anyway。People really need help but may attack you if you do help them。