老鼠和人之间的唯一区别是老鼠会从经验中学习。
The only difference between a rat and a human is that a rat learns from experience.
The power of causal reasoning is that it allows us to predict the effects of actions we have never taken.
Quality is remembered long after price is forgotten.
每一首歌都有自己的故事。
Certification schemes are the grammar of responsible forestry—they give structure to our good intentions.