137What we call progress is a matter of exchanging one problem for another.
137What we call progress is a matter of exchanging one problem for another.
我们所谓的进步只不过是把一个问题转化成了另一个问题。
137What we call progress is a matter of exchanging one problem for another.
我们所谓的进步只不过是把一个问题转化成了另一个问题。