Keep it simple, repeat simple things.

心理活动总是朝向某个目的。

"The most dangerous kind of waste is the waste we do not recognize."

计算效率的概念是学习算法设计的核心。

False facts are highly injurious to the progress of science, for they often endure long.  

It's important to stay true to yourself and your values.

译文：爽口的美食吃多了容易生病，高兴的事过头容易生出祸殃。赏析：任何看似令人爽口的食物吃多了，都会伤害身体，更何况那些垃圾食品呢。人在高兴时，容易得意忘形，说话做事都有失妥当。

幸福是最近两年里听到最多的词语。幸福不单只是和个人经历和价值相关，它也同样关系到我们的环境。