我们越是研究疼痛,就越能理解它在生存中的作用。
引导的关键是让人们更容易做出更好的选择。
The speech we hear is an indication of that which we don't hear.
"The only limit to our realization of tomorrow will be our doubts of today."
桥梁不仅是一种结构,也是人类进步的象征。